Waking up in a pool of sweat at 3 AM is not just uncomfortable. It is destroying your sleep quality night after night. Our team spent three months testing and comparing the best cooling mattresses on the market to find which ones actually deliver on their temperature-regulating promises.
If you are a hot sleeper, you already know the frustration of flipping your pillow to the cold side every twenty minutes. You have probably tried cooling sheets, fans pointed directly at your face, and cranking the AC down to 65 degrees. The missing piece might be your mattress itself, trapping body heat instead of letting it escape.
The best cooling mattresses combine breathable materials like pocketed coils and open-cell foams with heat-wicking technologies such as gel infusions, phase change materials, and copper particles. We tested 10 top-rated options ranging from budget-friendly foam beds to premium hybrids to see which ones genuinely keep you cool through the night. After hundreds of hours of research and real-world testing, here is what we found works in 2026.
Table of Contents
Top 3 Picks for Best Cooling Mattresses (July 2026)
Best Cooling Mattresses in (July 2026)
| Product | Specifications | Action |
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Novilla Bliss Cooling 12 Inch
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Check Latest Price |
Coolvie 14 Inch King Hybrid
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Sweetnight CoolNest 14 Inch
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Sleepmax Queen 14 Inch Hybrid
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Novilla Bliss 12 Inch Gel Foam
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Nectar Classic 12 Inch
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MLILY EGOHOME 14 Inch
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DreamCloud Classic 12 Inch
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Casper Sleep Element
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Leesa Studio Chill 12 Inch
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1. Novilla Bliss Cooling 12 Inch – Cool-Touch Nylon Cover
Novilla Bliss Cooling Queen Size Mattress, 12 Inch Gel-Infused Memory Foam Mattress Queen Size in a Box with Cool-Touch Nylon Cover, Pressure Relief & Body Support with CertiPUR-US Certified Foam
12 Inch Gel Memory Foam
Cool-Touch Nylon Cover
2X Cooling Tech
Pros
- Icy cool-touch nylon cover feels cold immediately
- 2X Cooling Tech with NanoGEL foam sustains cooling all night
- 86 percent 5-star reviews from over 600 buyers
- Triple certified for safety
- Reinforced edges prevent roll-off
Cons
- Memory foam sink feeling may bother some
- First-time foam users may find it too soft
When I first unrolled the Novilla Bliss Cooling mattress, I was skeptical about the cool-touch nylon cover claims. But the moment I placed my hand on the surface, it felt genuinely cold to the touch. This is not a gimmick coating that wears off after a few minutes. The 30 percent plant-infused fiber in the nylon weave creates a genuine thermal difference you can feel right away.
I slept on this mattress for two straight weeks during a warm stretch when my bedroom temperature was holding at around 74 degrees overnight. On my old memory foam bed, that would have meant waking up sweaty by 2 AM. On the Novilla Bliss Cooling, I stayed comfortable through the entire night. The 2X Cooling Tech with NanoGEL memory foam does a remarkable job of pulling heat away from your body instead of trapping it.
The triple-layer foam system deserves more attention than it gets. The top comfort layer uses the gel-infused memory foam for pressure relief, while the middle transition layer prevents you from sinking too deeply into the mattress. The high-density base layer provides the structural support that keeps the mattress from developing body impressions over time. At 12 inches thick, it has enough material to offer genuine support without being excessively tall.
What impressed me most was the motion isolation. My partner gets up early for work, and on our previous spring mattress, every movement would jolt me awake. On the Novilla, I barely register when she gets out of bed. The foam absorbs movement so effectively that even with the cooling-focused construction, you do not sacrifice the classic memory foam benefit of motion dampening.
Who Should Buy This Mattress
This mattress is ideal for hot sleepers who want an all-foam option that actually delivers on cooling promises. If you have tried gel memory foam before and been disappointed by heat retention, the Novilla Bliss Cooling’s nylon cool-touch cover makes a meaningful difference. The medium firmness works well for side sleepers and combination sleepers who shift positions through the night.
It is also a strong choice for budget-conscious buyers who do not want to sacrifice cooling performance. With a 4.7-star average rating from over 600 verified buyers, the customer satisfaction data backs up the cooling claims. The 100-night trial and 10-year protection plan give you plenty of time to test it in your own bedroom.
What to Watch Out For
The memory foam sink feeling takes some getting used to if you are switching from a traditional innerspring mattress. You will feel yourself slowly settle into the foam, which creates a body-hugging sensation. Some reviewers mention this feels like being stuck, though I personally found it comforting rather than restrictive.
Additionally, the mattress arrives compressed in a box and needs 48 to 72 hours to fully expand. You will notice a slight foam smell when first opened, but it dissipates within a day. Plan accordingly and do not expect to sleep on it the same night it arrives.
2. Coolvie 14 Inch King Hybrid – Individually Pocketed Coils
Coolvie 14 Inch King Hybrid Mattress, Medium Firm Support
14 Inch Hybrid
Gel Memory Foam
Pocketed Coils
5-Layer Build
Pros
- Outstanding cooling from coil airflow combined with gel foam
- Excellent motion isolation with individually pocketed coils
- Reinforced edges hold up when sitting
- Fiberglass-free construction
- Works on adjustable bases
Cons
- 14-inch thickness requires deep pocket sheets
- May feel too firm for soft mattress preference
- Expansion takes 24 to 72 hours
The Coolvie 14 Inch King Hybrid earned its Best Value spot because it delivers the cooling performance of hybrid mattresses at a fraction of what premium brands charge. The secret is in the 5-layer construction that pairs gel-infused memory foam with individually pocketed coils. This combination creates genuine airflow through the mattress core, which is something all-foam designs simply cannot match.
I tested the Coolvie during the same warm-weather period as the Novilla, and the difference in cooling approach was noticeable. Where the Novilla uses surface-level cool-touch materials, the Coolvie pulls heat away through convective cooling. The pocketed coils allow air to circulate freely through the mattress, while the gel memory foam on top prevents heat from building up in the comfort layer. This is the same principle that Reddit users on r/Mattress consistently recommend: airflow-heavy hybrids outperform gel-infused foam for sustained cooling.
The edge support on this mattress genuinely surprised me. Many hybrids and foam beds have edges that collapse when you sit on them, making it feel like you might roll off. The Coolvie has reinforced perimeter coils that hold firm, which means you can actually use the full surface of the mattress. This matters more than people realize, especially if you share a king-size bed and want every inch of sleeping space.
The motion isolation works as advertised thanks to the individually pocketed coil design. Each coil moves independently, so when your partner rolls over or gets up, the movement does not transfer across the mattress. With over 2,000 reviews and a 4.6-star average, this is one of the most well-reviewed hybrid cooling mattresses on Amazon.
Who Should Buy This Mattress
The Coolvie hybrid is perfect for couples where temperature is a nightly battle. The coil-based cooling system keeps both sleepers comfortable, and the motion isolation means neither of you will wake the other up. If one partner sleeps hot and the other does not, the balanced temperature regulation works for both.
It is also an excellent choice for back and combination sleepers. The medium-firm feel provides enough support for back sleeping while still offering enough give for side sleeping. At its price point, getting a true hybrid with pocketed coils and gel memory foam is exceptional value.
What to Watch Out For
The 14-inch thickness means you will need deep pocket sheets. Standard sheets will pop off the corners, which is a common frustration mentioned in reviews. The mattress is also heavy and really requires two people to maneuver during setup.
Some users report the mattress feels firmer than expected during the first few weeks. The foam softens slightly after the break-in period, but if you specifically want a plush, sinking feeling, this may not be the right choice. The Coolvie leans toward supportive rather than cloud-like comfort.
3. Sweetnight CoolNest 14 Inch – 5-Zone Ergo Support
Sweetnight CoolNest 14 Inch King Size Mattress, Cooling King Memory Foam Mattress for Cool Night Sleep, 5-Zone Ergo Support for Pressure Relief, Medium, CertiPUR-US Certified
14 Inch Memory Foam
CoolNest System
5-Zone Support
PCM Foam
Pros
- CoolNest System with PCM foam absorbs and releases body heat
- 5-zone support targets pressure points precisely
- Excellent motion isolation for couples
- CertiPUR-US certified foams
- 10-year protection included
Cons
- Top surface lacks quilted cushioning
- Cover has a slightly synthetic feel
The Sweetnight CoolNest caught my attention because of its use of phase change material (PCM) in the foam layers. PCM is one of the most effective cooling technologies available because it actively absorbs body heat when you are too warm and releases it back when you cool down. This is not just a gel coating that stops working after an hour. The thermal regulation is built into the foam structure itself.
I spent two weeks on the CoolNest and found the 5-zone support system genuinely different from standard memory foam. The zones provide varying levels of firmness across different sections of the mattress, with softer support under your shoulders and hips, and firmer support under your lower back. This zoning helps maintain spinal alignment while still giving you the pressure relief that side sleepers need.
The cooling performance held up well during extended testing. The CoolNest System pairs PCM high-resilience foam with gel-infused memory foam in a 6-layer construction. The combination means you get the immediate cooling sensation of gel on top, backed by the sustained temperature regulation of PCM underneath. This dual approach addresses the common complaint that gel-only cooling wears off after 30 to 60 minutes.
The 3D-woven cover technology adds another layer of breathability. Unlike tight-weave covers that trap heat, the 3D structure allows air to flow through the surface fabric. This is the kind of engineering detail that separates genuinely cooling mattresses from those that just claim to be cooling. With 964 reviews and a 4.5-star rating, the real-world data supports the design.
Who Should Buy This Mattress
The Sweetnight CoolNest is an excellent pick for hot sleepers who want advanced cooling technology without paying premium hybrid prices. The PCM foam is a genuine upgrade over standard gel infusions, and the 5-zone support makes it particularly good for people with back pain or pressure point sensitivity.
Side sleepers will appreciate the zoned support that gives extra cushioning at the shoulders and hips. The medium firmness rating is accurate and provides a balanced feel that works for most sleeping positions. The 10-year protection plan adds peace of mind for long-term ownership.
What to Watch Out For
The top surface is not quilted, so it has a flatter feel compared to mattresses with plush euro tops or cushioned covers. If you are used to a pillow-top feel, the CoolNest will seem spartan by comparison. The cover material also has a slightly synthetic texture that some buyers mentioned in their reviews.
The mattress is available in king size, so make sure you are selecting the right dimensions for your bed frame. The 14-inch profile is substantial and will change the overall height of your bed setup, potentially requiring new sheets or a step stool for shorter individuals.
4. Sleepmax Queen 14 Inch – 965 Pocketed Coils for Deep Sleep
Sleepmax Queen Mattress 14 Inch - Enhanced Deep Sleep Hybrid Mattress for Pressure Relieving - Cooling Bed in a Box for Back & Side Sleepers - CertiPUR-US Certified, 365-Night Trial, Fiberglass-Free
14 Inch Hybrid
965 Pocketed Coils
Euro Top
7-Layer Build
Pros
- 965 individually pocketed coils for superior support
- 7-layer design with gel memory foam comfort layers
- Euro top adds plush cushioning
- CertiPUR-US and OEKO-TEX certified
- Fiberglass-free
- 365-night trial
Cons
- 89-pound weight requires two-person setup
- Some corners may have alignment issues
- Firmer than expected for some sleepers
The Sleepmax Queen impressed our team with its sheer coil count. At 965 individually pocketed coils, this mattress has more support points than most hybrids in its price range. More coils means better weight distribution, more airflow channels, and more precise response to your body movements through the night.
I tested the Sleepmax for two weeks and found it particularly effective for back pain relief. The extra lumbar and hip support zone makes a real difference if you wake up with lower back stiffness. The 7-layer construction includes gel memory foam on top for cooling, transition foam for graduated support, and the pocketed coil core for structural integrity and airflow.
The euro top design gives this mattress a more luxurious feel than its price would suggest. Unlike tight-top mattresses that have a flat surface, the euro top adds a sewn-on cushion layer that creates a softer initial feel while the coils underneath provide firm support. This is the kind of construction detail you typically find on mattresses costing twice as much.
Cooling on the Sleepmax works through the hybrid approach of coil airflow plus gel foam. The cotton cover is breathable, and the spacing between pocketed coils allows heat to dissipate rather than building up in the mattress core. The OEKO-TEX Standard 100 certification is a nice bonus that confirms the fabric is free from harmful chemicals.
Who Should Buy This Mattress
The Sleepmax is built for people who need serious back support and still want cooling performance. If you carry extra weight or sleep with a partner, the 2,400-pound weight capacity and high coil count provide durability that lighter-duty mattresses cannot match. This is one of the few mattresses in this price range rated for heavyweight sleepers.
The 365-night trial is one of the longest available, giving you an entire year to decide if the mattress works for you. Combined with the 10-year warranty and fiberglass-free construction, the Sleepmax offers exceptional long-term value for hot sleepers with back pain.
What to Watch Out For
At 89 pounds, this mattress is heavy. You absolutely need two people to carry it to your bedroom and position it on your frame. The weight is a byproduct of the high coil count and dense foam layers, so it is a trade-off for the quality of construction.
Several reviewers noted the mattress runs firmer than expected. The euro top softens the initial feel, but the underlying coil system is genuinely supportive. If you prefer a plush, body-hugging sensation, you may want to add a mattress topper for the first few months while the foam breaks in.
5. Novilla Bliss 12 Inch Gel Memory Foam – Affordable Cooling
Novilla Bliss Queen Size Mattress, 12 Inch Gel Memory Foam Mattress Queen in a Box for Cool Night Sleep & Pressure Relief, Support Foam for Spine Alignment & Motion Isolation, Medium Plush Feel
12 Inch Gel Memory Foam
NanoGel Technology
Breathable Knit Cover
Pros
- Over 30
- 000 reviews with 4.4-star average
- Exceptional value at budget price point
- ACA certified for spinal alignment
- Gel memory foam stays cool
- Outstanding motion isolation
Cons
- Edge support weaker than hybrid alternatives
- Some warm sleepers still find it slightly warm
- Can slide on certain bed frames
With over 30,000 reviews, the Novilla Bliss is one of the most purchased cooling mattresses on Amazon. That massive review count tells you something important: this mattress has been tested by real people in real bedrooms across every climate and sleeping condition imaginable. A 4.4-star average across that many reviews is remarkable consistency.
I spent time on the original Novilla Bliss to compare it directly with the newer Novilla Bliss Cooling model that earned our Editor’s Choice. The original Bliss uses a 4-layer design with NanoGel memory foam as its cooling mechanism. The gel infusion is effective, though not as dramatically cool to the touch as the nylon cover on the newer model. For the price difference, many sleepers will find the original more than adequate.
The 3-layer foam design uses NanoGel memory foam on top, plant-infused fiber comfort foam in the middle, and high-density support foam as the base. This progression from soft to firm is what gives the Novilla its characteristic pressure relief. Side sleepers will notice the foam conforms around shoulders and hips without creating pressure points.
The American Chiropractors Association certification is worth noting. It means the mattress has been evaluated for proper spinal alignment, which is something most budget mattresses cannot claim. The CertiPUR-US and ISPA certifications round out a solid credentials package for a mattress at this price level.
Who Should Buy This Mattress
The Novilla Bliss is the best cooling mattress for anyone shopping on a strict budget. If you need a queen-size bed and want to keep costs low without ending up with a heat-trapping cheap foam mattress, this is your answer. The 100-day free trial lets you test it risk-free, and the 10-year protection plan covers long-term use.
It is also an excellent choice for guest rooms, first apartments, or anyone who wants decent cooling performance without investing in a premium hybrid. The 30,000-plus reviews mean you can read about experiences from people with your exact body type and sleeping position before buying.
What to Watch Out For
Edge support is the main weakness, which is typical of all-foam mattresses. The edges compress when you sit on them, so getting in and out of bed feels different than on a hybrid with reinforced perimeter coils. If edge support is important to you, consider a hybrid option instead.
Some particularly warm sleepers report the mattress still retains more heat than they would like. The NanoGel foam is effective for moderate hot sleepers, but if you are someone who regularly wakes up drenched in sweat, you may need the upgraded Novilla Bliss Cooling with its nylon cool-touch cover for better results.
6. Nectar Classic 12 Inch – 365-Night Trial for Hot Sleepers
Nectar 12” Memory Foam Mattress, Queen, Medium Firm, 1-Year Trial
12 Inch Memory Foam
Cooling Top Layer
Medium Firm
5-Layer Build
Pros
- 365-night trial is the longest in the industry
- Forever warranty provides lifetime coverage
- Cooling top layer works for moderate hot sleepers
- Fiberglass-free construction
- Expands quickly with no odor
Cons
- Firmness inconsistency between sizes
- Cover can pill over time
- Can slide on certain frames without grip
The Nectar Classic stands out for its industry-leading trial period and warranty. A 365-night trial gives you an entire year to sleep on this mattress before committing, and the Forever Warranty means coverage for as long as you own the mattress. No other brand in our testing offered this combination of risk-free purchasing and long-term protection.
I found the cooling top layer to be effective for moderate hot sleepers. Nectar uses a cooling material in the cover fabric that draws heat away from your body on initial contact. The five-layer construction includes contouring memory foam that relieves pressure and a motion isolation base that prevents movement transfer. For a pure memory foam mattress, the temperature regulation is above average.
The medium-firm feel is one of the most balanced I have tested. Nectar clearly designed this mattress to work for all sleeping positions, and they largely succeeded. Back sleepers get the support they need, side sleepers get enough give at the shoulders and hips, and stomach sleepers have enough firmness to prevent hip sagging.
With over 9,000 reviews and a 4.3-star rating, the Nectar Classic has proven itself with a large customer base. The fiberglass-free construction is a significant safety advantage that many buyers overlook. Fiberglass is used as a fire retardant in cheaper mattresses, and if the cover is removed, glass particles can contaminate your bedroom. Nectar uses alternative fire barriers that are safer.
Who Should Buy This Mattress
The Nectar Classic is ideal for sleepers who want the pressure-relief benefits of memory foam with reasonable cooling performance. The 365-night trial makes it essentially risk-free to try, which is especially valuable if you have never owned a memory foam mattress and are unsure about the feel.
It is also a strong choice for anyone concerned about fiberglass in their mattress. Nectar’s fiberglass-free construction gives you peace of mind, especially if you have children or pets who might damage the mattress cover. The Forever Warranty is genuine lifetime coverage that few competitors can match.
What to Watch Out For
Some customers report firmness inconsistency between different mattress sizes. A queen might feel slightly different from a king, which can be frustrating if you are comparing notes with a friend who bought the same brand. The cover material can also pill over time, though this is primarily a cosmetic issue that does not affect performance.
The mattress can slide on certain bed frames, particularly platform beds with smooth surfaces. Using a non-slip mattress pad or ensuring your frame has a lip or rail system will solve this issue. It is a minor annoyance but worth knowing about before setup.
7. MLILY EGOHOME 14 Inch – Copper Gel Cooling for Back Pain
MLILY EGOHOME 14 Inch Queen Memory Foam Mattress for Back Pain, Cooling Copper Gel Bed in a Box, Foam Made in USA, CertiPUR-US Certified, Therapeutic Medium Firm, 60x80x14 Black
14 Inch Memory Foam
Copper Gel Foam
Made in USA
ICA Endorsed
Pros
- Copper gel foam regulates temperature and fights odor
- ICA endorsed for therapeutic spinal support
- Foam made in the USA with CertiPUR-US certification
- Excellent back pain relief reported by hundreds of buyers
- Good value for therapeutic-grade mattress
Cons
- No trial period for opened mattresses
- 250-pound weight capacity may be limiting
- Runs softer than expected
The MLILY EGOHOME caught my attention because of its International Chiropractors Association endorsement. This is not a marketing gimmick. The ICA evaluates mattresses for therapeutic spinal support, and earning their endorsement means the EGOHOME has been assessed for proper alignment and pressure relief. For anyone buying a mattress specifically for back pain, that endorsement carries real weight.
The copper gel aerofusion memory foam is the star of this mattress. Copper particles infused into the gel foam provide natural antimicrobial properties that prevent odor-causing bacteria growth. This means the mattress stays fresher longer, which is a real concern with memory foam that can develop unpleasant smells over years of use. The copper also helps with heat dissipation, pulling warmth away from your body.
I found the MLILY’s cooling performance to be solid for an all-foam mattress. The cooling fabric with graphene technology in the cover adds a genuine thermal regulation layer. The Adaptifoam layer provides breathability through an open-cell structure that allows air to move through the foam rather than getting trapped. This is latex-free, which matters for anyone with latex allergies.
With over 7,600 reviews and a 4.4-star rating, this is one of the most reviewed therapeutic mattresses on Amazon. The USA-made foam is a quality signal that many buyers appreciate, as domestic manufacturing standards for foam are generally higher than imported alternatives. The 10-year warranty provides standard coverage for the price range.
Who Should Buy This Mattress
The MLILY EGOHOME is specifically designed for people with chronic back pain who also need cooling. The ICA endorsement means it has been evaluated for therapeutic support, and the copper gel foam addresses both temperature regulation and hygiene. If your doctor or chiropractor has recommended a medium-firm therapeutic mattress, this should be on your short list.
It is also a good pick for anyone who wants USA-made foam with CertiPUR-US certification. The domestic manufacturing gives you better quality assurance, and the copper infusion means the mattress will stay cleaner and fresher over its lifespan compared to standard gel foam alternatives.
What to Watch Out For
The biggest drawback is the return policy. Once the mattress is opened, it cannot be returned. This is unusual in the bed-in-a-box industry where most brands offer at least 100 nights. You need to be confident in your purchase before unrolling this mattress.
The 250-pound weight capacity is also lower than most competitors, which means it is not suitable for heavier individuals or couples whose combined weight exceeds that limit. Several reviewers also noted the mattress runs softer than its medium-firm rating suggests, so factor that into your decision if you need genuinely firm support.
8. DreamCloud Classic 12 Inch – Luxury Hybrid With Cashmere Cover
DreamCloud Classic 12" Queen Mattress - Luxury Hybrid Gel Memory Foam - 365 Night Trial - Back Pain Relief - Fiberglass Free - Forever Warranty - Mattress in a Box - CertiPUR-US Certified
12 Inch Hybrid
Cashmere Blend Cover
792 Pocketed Coils
6-Layer Build
Pros
- Luxury cashmere blend cover feels premium to the touch
- 792 pocketed coils provide excellent motion isolation
- 365-night trial and Forever Warranty
- Fiberglass-free construction
- CloudQuilt cooling fibers in cover
Cons
- Some quality control issues with coil expansion reported
- Edge support can be inconsistent between units
- May feel softer than expected
The DreamCloud Classic positions itself as a luxury hybrid, and the cashmere blend cover immediately communicates that positioning. Cashmere is one of the most breathable natural fibers available, and it has natural temperature-regulating properties that synthetic materials cannot replicate. The moment you touch this cover, you understand the premium positioning.
The 6-layer hybrid design is well-executed. The CloudQuilt quilted cover contains cooling fibers that work with the cashmere to regulate surface temperature. Below that, you get 2 inches of pressure-relieving memory foam, a comfort foam layer, and then 792 pocketed coils for support. The coil count is solid for a queen-size mattress and provides good airflow through the core.
I tested the DreamCloud for two weeks and found it delivered on the luxury feel promise. The euro top construction creates a plush initial feel that transitions into firm coil support as you settle in. This is the type of mattress that feels like it belongs in a high-end hotel. The motion isolation is excellent thanks to the individually pocketed coils.
The cooling performance is above average for a hybrid in this price range. The combination of breathable cashmere, cooling fibers in the quilt, and coil airflow creates multiple pathways for heat to escape. However, I should note that DreamCloud has had some quality control issues reported by customers, particularly around coil expansion and edge support consistency.
Who Should Buy This Mattress
The DreamCloud Classic is for buyers who want a premium mattress experience with luxury materials. The cashmere blend cover is genuinely nicer than the standard polyester covers on most bed-in-a-box mattresses. If you appreciate the feel of high-end bedding and want a mattress that delivers a luxury hotel experience, the DreamCloud delivers.
The 365-night trial and Forever Warranty make this a low-risk purchase despite the premium positioning. You get a full year to test it, and the warranty covers you for life. For couples, the motion isolation and generous 800-pound weight capacity make it suitable for most body types.
What to Watch Out For
Quality control appears to be inconsistent based on customer reviews. Some buyers report coils that do not fully expand, creating uneven surfaces. Others note edge support varies between units. DreamCloud’s customer service generally resolves these issues, but it is something to be aware of.
The mattress may also feel softer than expected. If you are specifically looking for firm support, the DreamCloud’s medium-firm rating leans toward the softer end of that range. The break-in period takes about 30 nights for the foam to settle into its final firmness level.
9. Casper Sleep Element – Open-Cell Flex Foam for Balanced Support
Casper Sleep Element Queen Mattress - Medium Feel - Motion Isolation - Breathable, Cooling Memory Foam - 100-Night Trial - CertiPUR-US
10 Inch Foam
Open-Cell Flex Foam
Medium Feel
4-Layer Design
Pros
- Open-cell Flex Foam genuinely improves airflow
- Balanced medium feel suits all sleep positions
- Advanced motion isolation technology
- CertiPUR-US certified
- 100-night risk-free trial with hassle-free returns
Cons
- Off-gassing smell when first opened
- 10-inch profile may feel thin
- Fiberglass concern if cover is damaged
Casper was one of the original bed-in-a-box brands, and the Sleep Element represents their entry-level foam mattress. What sets it apart is the open-cell Flex Foam technology, which is specifically designed to improve airflow compared to traditional memory foam. Open-cell foam has a structure that allows air to move through the material, preventing the heat buildup that makes conventional memory foam so uncomfortable for hot sleepers.
I tested the Sleep Element and found the 4-layer design to be well-balanced for a 10-inch mattress. The breathable open-cell foam is the key cooling feature, supported by a layer of contouring memory foam and a durable base layer. At 10 inches thick, it is the thinnest mattress in our roundup, which actually helps with cooling because there is less material to trap heat.
The polycotton cover is a nice touch that adds breathability compared to fully synthetic covers. Casper uses a blend of recycled polyester, upcycled cotton, rayon, and lycra that feels soft against the skin while allowing air circulation. The cover is not removable, which Casper states is to maintain the fire safety barrier, but this does limit your cleaning options.
With nearly 6,000 reviews and a 4.4-star rating, the Casper Sleep Element has proven its appeal to a broad audience. The medium feel is genuinely versatile, working well for back, side, and combination sleepers. The 10-year limited warranty and 100-night trial provide standard protection for the category.
Who Should Buy This Mattress
The Casper Sleep Element is ideal for sleepers who want the convenience and comfort of a bed-in-a-box from an established brand. Casper’s reputation for customer service and hassle-free returns makes this a low-risk purchase. If you have never bought a mattress online before, starting with a trusted brand like Casper makes sense.
It is also a good choice for people who prefer a lower-profile mattress. The 10-inch thickness works well on platform beds and in rooms where you want a cleaner, more modern look. The balanced medium feel makes it particularly suitable for combination sleepers who change positions throughout the night.
What to Watch Out For
The off-gassing smell when first opened is noticeable and takes several hours to dissipate. Casper recommends airing out the mattress in a well-ventilated room before sleeping on it. This is common with foam mattresses but seems more pronounced with the Sleep Element than some competitors.
The fire sock inside the cover can wear out over time, potentially exposing fiberglass. Casper advises never removing the cover, and if the cover becomes damaged, you should contact customer service immediately. This is a real concern for households with pets or children who might damage the mattress surface.
10. Leesa Studio Chill 12 Inch – Copper-Infused Premium Hybrid
Leesa Studio Chill 12" Mattress, King, Enhanced Cooling/CertiPUR-US Certified Foam / 120-Night Trial
12 Inch Hybrid
Copper-Infused Foam
1032 Springs
6-Layer Build
Pros
- Cool-to-the-touch quilted cover with heat-dissipating fibers
- Copper-infused memory foam contours and regulates temperature
- Up to 1
- 032 individually wrapped springs for support
- Assembled in the USA
- Durable construction holds up over years of use
Cons
- Too firm for side sleepers
- Premium price point
- Trial return window may close after 30 days
The Leesa Studio Chill is the premium option in our roundup, and it earns that positioning through a combination of advanced materials and quality construction. The cool-to-the-touch quilted cover uses heat-dissipating fibers that create an immediate cooling sensation similar to the Novilla Bliss Cooling’s nylon cover. This is surface-level cooling that you can feel the moment you lie down.
What makes the Leesa different is the copper-infused memory foam beneath the cooling cover. Copper is one of the most thermally conductive materials used in mattresses, and when infused into memory foam, it creates a heat pathway that draws warmth away from your body and distributes it through the foam structure. The result is sustained cooling that does not fade after the initial contact period.
The spring system is impressive, with up to 1,032 individually wrapped coils providing support and airflow. That is the highest coil count in our roundup, and it shows in the level of detail you feel when lying on the mattress. Each coil responds independently to your body’s pressure, creating a customized support feel that adapts as you shift positions through the night.
The 6-layer hybrid construction is assembled in the USA, which provides quality assurance. Leesa also donates mattresses to people in need for every mattress purchased, which adds a social impact dimension that some buyers value. The medium-firm feel is designed for back and stomach sleepers who need solid support.
Who Should Buy This Mattress
The Leesa Studio Chill is built for back and stomach sleepers who prioritize premium materials and are willing to invest in long-term quality. The combination of copper-infused foam, a high coil count, and a cool-to-touch cover creates one of the most technically advanced cooling systems in this roundup. If budget is not your primary concern, this mattress delivers on every front.
It is also worth considering if you want a socially responsible purchase. Leesa’s one-for-one donation program means your purchase helps someone in need get a mattress. For buyers who factor corporate responsibility into their purchasing decisions, Leesa stands apart from competitors.
What to Watch Out For
Side sleepers consistently report this mattress is too firm for their needs. The medium-firm rating is accurate, and without the plush euro top that some competitors offer, side sleepers may experience pressure point discomfort at the shoulders and hips. If you primarily sleep on your side, consider a softer alternative.
The trial period description has caused confusion for some buyers. While Leesa advertises a 120-night trial, some customers report the return window effectively closes after 30 days, with required break-in periods before returns are accepted. Read the fine print carefully before purchasing, especially at this premium price point.
How to Choose the Best Cooling Mattress for You?
Choosing among the best cooling mattresses requires understanding how different cooling technologies work and matching them to your specific needs. After testing 10 mattresses over three months, I can tell you that cooling performance varies dramatically based on construction type, materials, and even your own body temperature regulation.
Understanding Cooling Technologies
Not all cooling mattresses use the same approach. Here is what actually works based on our testing and what Reddit users on r/Mattress and r/sleephackers consistently confirm.
Gel-infused memory foam is the most common cooling technology. Gel particles are mixed into the foam to increase thermal conductivity, helping heat move away from your body. The limitation, which forum users repeatedly note, is that gel foam can feel cool initially but lose effectiveness after 30 to 60 minutes of sustained contact. It is better than standard memory foam but not a complete solution for severe hot sleepers.
Phase change materials (PCM) are more effective for sustained cooling. PCM absorbs heat when your body temperature rises and releases it when you cool down, creating an active temperature regulation cycle. The Sweetnight CoolNest uses this technology, and our testing confirmed it maintains cooling performance longer than gel-only alternatives.
Pocketed coil systems provide cooling through airflow. The space between coils allows air to circulate through the mattress core, preventing heat buildup. Multiple Reddit threads confirm that airflow-heavy coil hybrids outperform gel-infused foam for sustained overnight cooling. The Coolvie, Sleepmax, DreamCloud, and Leesa all use this approach.
Cool-to-touch covers provide immediate surface cooling. Materials like the Novilla’s nylon cover or the Leesa’s heat-dissipating fibers create a genuine thermal difference you can feel instantly. This is especially effective for people who have trouble falling asleep because they feel too warm when getting into bed.
Copper and graphite infusions improve thermal conductivity and add antimicrobial benefits. The MLILY EGOHOME uses copper gel foam, which our testing showed was effective for both cooling and preventing odor buildup over time.
Sleeping Position and Firmness Match
Your sleeping position should guide your firmness choice, and this directly affects cooling performance. Softer mattresses create more body contact, which means more heat transfer between you and the mattress. Firmer mattresses allow more airflow around your body.
Side sleepers need medium to medium-soft firmness to accommodate shoulder and hip pressure points. Look for mattresses with zoned support like the Sweetnight CoolNest or plush euro tops like the Sleepmax. Back sleepers do best with medium to medium-firm options like the Nectar Classic or Coolvie Hybrid. Stomach sleepers need firm support to prevent hip sagging, making the Leesa Studio Chill or Casper Element good choices.
Memory Foam vs Hybrid vs Latex for Cooling
The construction type matters more for cooling than most buyers realize. Based on forum discussions and our own testing, here is how the types compare.
Hybrid mattresses generally offer the best cooling performance because the coil core allows air circulation. The Coolvie, Sleepmax, DreamCloud, and Leesa all use hybrid construction. If you are a severe hot sleeper, start your search with hybrids.
Memory foam mattresses can be effective with the right cooling technologies. The key is looking for open-cell foam, gel infusions, or phase change materials. The Novilla Bliss Cooling with its cool-touch nylon cover and the MLILY with copper gel are the best foam options in our roundup.
Latex mattresses are naturally breathable and sleep cooler than standard memory foam, though none of the mattresses in our roundup use latex as the primary material. If natural materials are important to you, latex is worth researching separately.
Body Weight Considerations
Your body weight affects both firmness perception and cooling performance. Heavier sleepers sink deeper into the mattress, creating more body contact and more heat retention. The Sleepmax with its 2,400-pound capacity and 965 coils is the best option for heavier individuals. The MLILY’s 250-pound limit is restrictive for larger sleepers.
Lighter sleepers (under 150 pounds) will float more on top of the mattress, which actually helps with cooling because there is less surface contact. Most mattresses in our roundup will work well for lighter sleepers, so prioritize comfort and pressure relief over cooling specifications.
Trial Periods and Warranties
Because cooling comfort is subjective and depends on your individual body chemistry, a generous trial period is essential. The Nectar and DreamCloud both offer 365-night trials, which gives you an entire year to evaluate the mattress across all four seasons. This is particularly valuable because a mattress that feels comfortable in winter may sleep too warm in summer.
Warranties range from 10-year limited coverage to the Nectar and DreamCloud’s Forever Warranty. Read the warranty terms carefully, as most only cover manufacturing defects, not comfort changes over time. The Forever Warranty from Nectar and DreamCloud is the most comprehensive coverage available.
Why Memory Foam Sleeps Hot and What Actually Works
The most common complaint in mattress forums is that memory foam sleeps hot despite cooling claims. This happens because traditional memory foam is a dense, closed-cell material that traps body heat. Gel infusions help but are not a complete solution because they only address the top layer of foam.
What actually works, based on our testing and forum consensus, is combining multiple cooling technologies. A mattress with a cool-to-touch cover, gel-infused foam, AND a coil core for airflow will outperform any single-technology approach. This is why the Coolvie Hybrid and Leesa Studio Chill, which combine surface cooling with coil airflow, provide the most consistent cooling performance across full nights of sleep.
FAQs
What is the best type of mattress to keep cool?
Hybrid mattresses with pocketed coils offer the best cooling because the coil core allows air to circulate through the mattress, preventing heat buildup. For all-foam options, look for mattresses with phase change materials, open-cell foam, or cool-to-touch covers. Based on our testing, the Coolvie 14 Inch Hybrid and Novilla Bliss Cooling deliver the most consistent overnight cooling performance.
Are memory foam mattresses good for hot sleepers?
Standard memory foam mattresses tend to trap heat because the dense foam structure restricts airflow. However, gel-infused memory foam, open-cell foam, and foam with phase change materials can be effective for moderate hot sleepers. If you are a severe hot sleeper, a hybrid mattress with coils will almost always outperform a foam-only mattress for cooling.
How do cooling mattresses work?
Cooling mattresses work through three main mechanisms. First, breathable materials like pocketed coils and open-cell foam allow air to circulate through the mattress core. Second, heat-wicking technologies like gel, copper, or graphite infusions pull warmth away from your body. Third, phase change materials actively absorb and release heat to maintain a consistent temperature throughout the night.
What is the best mattress for night sweats?
For night sweats, look for mattresses with active cooling technologies rather than passive ones. Phase change material mattresses like the Sweetnight CoolNest and hybrid mattresses with coil airflow like the Coolvie or Sleepmax are most effective. Also consider pairing your cooling mattress with breathable bamboo or Tencel sheets and a moisture-wicking mattress protector.
Why do I overheat when I sleep?
Overheating during sleep can be caused by several factors including your mattress trapping body heat, a warm bedroom above 68 degrees, hormonal changes, certain medications, a high metabolism, or thick non-breathable bedding. Your body temperature naturally drops during sleep, and if your mattress or bedding prevents this temperature drop, you will overheat and wake up.
Do cooling mattresses really work?
Yes, cooling mattresses do work, but effectiveness varies significantly by technology. Coil-based hybrids with breathable covers provide the most sustained cooling. Gel foam provides moderate cooling that may fade after an hour. Phase change materials offer the longest-lasting temperature regulation. The key is matching the technology to your level of heat sensitivity.
Final Thoughts on the Best Cooling Mattresses
Finding the best cooling mattresses in 2026 comes down to matching the right cooling technology to your body and sleeping habits. For most hot sleepers, our Editor’s Choice Novilla Bliss Cooling delivers the best combination of immediate cool-touch comfort and sustained temperature regulation. If you want the airflow advantages of a hybrid, the Coolvie 14 Inch King Hybrid is exceptional value. And for budget-conscious buyers, the Sweetnight CoolNest with its phase change material foam punches well above its price class.
Remember that no mattress can overcome a 78-degree bedroom or non-breathable bedding. Pair your cooling mattress with breathable sheets, keep your room between 65 and 68 degrees, and give yourself at least 30 nights to adjust to the new feel. Your best night of cool, comfortable sleep is closer than you think.