The Yogasleep ThermaCool Gel Memory Foam Mattress is a 10-inch all-foam bed for people who like steady contouring but tend to sleep hot. Its copper- and gel-infused foams limited heat buildup while keeping the spine comfortably supported in back and side positions. The main compromises are a soft sitting edge and the slow, low-bounce response common to memory foam.
Table of Contents
- ThermaCool at a Glance
- Is the ThermaCool Worth It?
- How We Evaluated the ThermaCool
- Our Testing Experience
- Pros & Cons
- Specs, Price, and Policies
- How the ThermaCool Scored
- Should You Buy the ThermaCool?
- Where the ThermaCool Comes Up Short
- How It Compares With Current Alternatives
- How to Get the Best From It
- FAQs
ThermaCool at a Glance
| Mattress | Overall Score | Pros | Cons | Ideal For |
|---|---|---|---|---|
| ThermaCool Gel Memory Foam | 4.0/5 | Cooler foam surface, balanced pressure relief, strong motion control | Soft sitting edge, muted bounce | Hot sleepers, back and side sleepers, couples |
Is the ThermaCool Worth It?
The ThermaCool earns its 4.0/5 rating by addressing two common memory-foam complaints: excess sink and lingering heat. It cushions the shoulders and hips without letting the midsection drop too far, and its cover can be removed for washing. It is a strong choice for sleepers who want the quiet, close contour of an all-foam mattress. Choose something with coils if easy movement or a firm sitting edge matters more than motion control.
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Who It’s For
- Back and side sleepers who prefer a medium feel with a supportive finish
- Hot sleepers who still want a close memory-foam contour
- Couples who are easily disturbed by movement
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Who It’s Not For
- Sleepers who want noticeable spring and quick rebound
- People who regularly sit on the edge of the mattress
- Dedicated stomach sleepers who need a very firm surface under the hips

How We Evaluated the ThermaCool
We used the mattress for back, side, and combination sleep over a month. Our mattress evaluation covered support, pressure relief, and surface temperature during longer sleep sessions. We also repeated motion-isolation drops, timed how long vibrations remained visible, checked ease of movement during position changes, and compared edge compression with compression at the center. Marcus focused on back support and heat around the torso, while Mia tracked shoulder and hip comfort during side sleep.
Our Testing Experience
Our sample reached 10.0 inches at the center after expansion and held that height through 31 nights. We rated the feel 6/10: the top accepted the shoulders and hips, but the base stopped the pelvis from sinking deeply. Marcus felt even support across his lower back during back sleep. Mia needed a few minutes for the foam to settle around her shoulder during side sleep, after which the pressure eased without making her feel trapped.
With the room held near 72°F, the surface started at 72.1°F and reached 81.4°F after 30 minutes of lying still. Five minutes after getting up, it had dropped to 75.0°F. That is not a cold surface, but it released stored heat quickly enough to stay comfortable. Motion control was equally convincing: across three drops of a 10-pound medicine ball from 6 inches, 24 inches from the sensor, visible vibration averaged 0.7 seconds. The edge was the clear weak point. A 44-pound load compressed the center by 1.3 inches and the surface 2 inches from the side by 2.1 inches, matching the softer feel we noticed while sitting.
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What we liked
- Heat cleared from the surface quickly after pressure was removed
- Shoulder cushioning came without a deep, hard-to-escape sink
- Partner movement stayed brief and localized
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Who it is best for
- Back and side sleepers who like a feel around 6/10
- Warm sleepers who want foam contouring without slow heat release
- Couples and light sleepers who prioritize motion isolation over bounce
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Where it falls short
- The perimeter compresses noticeably more than the center when seated
- Position changes require more effort than on a responsive hybrid
- Sleepers who enjoy a buoyant surface may find the feel too subdued

Pros & Cons
| Pros | Cons |
|---|---|
| Releases heat faster than dense, traditional memory foam | Perimeter compresses more when seated |
| Contours the shoulders and hips without excessive sink | Slow rebound may frustrate combination sleepers |
| Contains movement well | Close foam contour will not suit everyone |
| Removable top cover is easy to wash | Weak choice for frequent edge sitting |
| Quiet, stable all-foam construction | Lightweight side sleepers may want more shoulder sink |
Specs, Price, and Policies
- Direct price when verified: $749–$1,449, depending on size
- Thickness: 10 inches
- Feel: medium according to Yogasleep; about 6/10 in our evaluation
- Type: all-foam memory-foam mattress with no coils
- Comfort materials: copper-infused memory foam and a 2-inch gel-swirl memory-foam layer
- Cooling design: copper- and gel-infused foam with an open-cell structure
- Cover: removable polyester Zip-n-Wash top; machine washable
- Certification: CertiPUR-US foam
- Made in: United States
- Sizes: Twin, Twin XL, Full, Queen, King, and California King
- Warranty: 10-year limited warranty
- Direct-order trial: 101 nights
- Direct shipping: free ground shipping in the contiguous United States; typically 5–7 business days

How the ThermaCool Scored
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.2/5 | Held the pelvis level in back and side positions |
| Cooling | 4.1/5 | Released most added surface heat within five minutes |
| Pressure Relief | 4.3/5 | Cushioned shoulders and outer hips without a deep sink |
| Motion Isolation | 4.2/5 | Kept drop-test vibration brief and localized |
| Responsiveness | 3.7/5 | Allowed normal turns but recovered more slowly than a hybrid |
| Edge Support | 3.4/5 | Stable enough for sleeping near the side, soft for sitting |
| Durability | 3.8/5 | Lost no measurable height in 31 nights; long-term wear remains untested |
| Overall | 4.0/5 | Well-balanced cooling foam with a weak sitting edge |
Should You Buy the ThermaCool?
Choose the ThermaCool if you want a quieter foam bed with measured pressure relief and less lingering surface heat. It is best suited to back and side sleepers, hot sleepers, and couples who notice each other’s movement. If you sit on the edge every day or change positions often, a hybrid mattress will feel easier to move across. Lightweight side sleepers should expect a firmer shoulder feel than they would get from a plush bed.
Among current alternatives, the Nectar Luxe Memory Foam adds deeper contouring in a taller all-foam design, while the Brooklyn Bedding Aurora Luxe Cooling adds coil-assisted bounce and a stronger perimeter. Both cost more in Queen size when prices were verified.
Where the ThermaCool Comes Up Short
The perimeter is the biggest weakness. Sleeping near the side felt secure, but sitting 2 inches from the edge produced noticeably more compression than the center. The foam also rebounds slowly, so frequent position changes take more effort than they do on a responsive hybrid. The 6/10 feel can press against the shoulders of lighter side sleepers, and a 31-night test cannot establish how the foam will perform after years of use.
How It Compares With Current Alternatives
The ThermaCool is the best fit among these options if you want an all-foam surface, strong motion isolation, a washable cover, and a price below most premium cooling beds. Its soft edge and slow rebound are the trade-offs.
Brooklyn Bedding Aurora Luxe Cooling
The Aurora Luxe Cooling uses zoned coils and a cooling cover, giving it more bounce, airflow, and perimeter stability than the ThermaCool. It is the better option for combination sleepers and frequent edge sitters, but it costs more and will transmit more movement than a quiet all-foam bed.
Casper Snow
Casper Snow pairs a cool-touch cover and phase-change material with zoned foam and coils. It feels more responsive and supportive around the edge, while the ThermaCool offers the simpler choice for sleepers who prioritize motion isolation and a removable, washable cover. Snow also sits in a higher price tier.
DreamCloud Classic Hybrid
The DreamCloud Classic Hybrid costs less in Queen size and provides more spring-assisted lift. Its 12-inch coil-and-foam build suits shoppers who want easier movement on a budget. The ThermaCool remains the better match for close contouring, low noise, and minimal partner disturbance.
Nectar Luxe Memory Foam
The 14-inch Nectar Luxe Memory Foam creates a deeper, softer contour with more memory foam above its support core. It suits side sleepers who want more cushioning, while the ThermaCool feels firmer, costs less, and is easier to keep clean because its top cover can be removed and washed.
How to Get the Best From It
- Let the mattress finish expanding before judging its height or feel, then spend several nights adjusting to the foam.
- Choose a breathable mattress protector that does not cover the cooling surface with thick padding.
- Rotate rather than flip the mattress if wear begins to look uneven.
- Pair it with percale sheets and a lighter comforter if bedroom temperature is a concern.
- Use a pillow height that keeps the neck level after the shoulder settles into the foam.
- Use a bench or chair for daily shoe changes if you want to reduce repeated edge compression.
- Machine-wash the removable top cover in cold water and hang it flat to dry; use only the lowest dryer heat if necessary.
- Use correctly sized sheets so excess fabric does not bunch under the shoulders or hips.
- Place the mattress on a flat, supportive foundation to prevent the base from sagging between wide slats.
FAQs
Does it actually sleep cool for memory foam?
It manages heat well for an all-foam mattress, though it does not feel cold all night. The surface rose from 72.1°F to 81.4°F during a 30-minute rest and cooled to 75.0°F five minutes after pressure was removed.
Is it good for side sleepers with shoulder pressure?
Yes, especially for average-weight side sleepers who like a 6/10 feel. The foam took a few minutes to settle around the shoulder, then relieved pressure without allowing excessive hip sink. Lighter sleepers may prefer a softer surface.
How useful is the washable cover in real life?
It is one of the mattress’s most practical features. The top section unzips around the perimeter, can be machine-washed in cold water, and should be hung or laid flat to dry.
Will I feel my partner move?
Large movements may still register, but normal turns should stay well contained. In our motion-isolation test, vibration from three controlled drops remained visible for an average of 0.7 seconds.