Yawnder Reviews
Cooling foam, re-tested
Watch our Cocoon mattress review
Our original Cocoon unboxing and hands-on overview was filmed in 2016. It shows an earlier model; the current Cocoon Chill may differ.
We tested Cocoon by Sealy Chill with the standardized Yawnder mattress protocol in August 2026 and rebuilt this page around the model-specific record.
Yawnder test results
| Overall score | 8 / 10 |
|---|---|
| Firmness | 6.5 / 10 |
| Spine alignment | 7.8 |
| Pressure relief | 8.2 |
| Cooling | 7.8 |
| Motion transfer | 8.8 |
| Edge support | 7 |
| Responsiveness | 7.9 |
| Expected durability | 7.4 |
| Off-gassing | 7.8 |
Specs and terms
| Type | Foam |
|---|---|
| Height / profile | 10" |
| Queen reference price | Check current price |
| Trial | 100 nights |
| Warranty | 10-Year Limited |
Who should consider it
Budget shoppers who want a cool-to-touch all-foam bed in a box. The Yawnder record shows stronger motion isolation (8.8/10) than edge support (7/10), so couples may want to weigh quiet movement against how much they use the perimeter. Firmness and pressure relief depend on body size and sleep position; a 6.5/10 score is our assessment of the tested mattress.
Chill Memory Foam vs. Chill Hybrid
This review’s scores apply to the 10-inch all-foam Chill Memory Foam, not the separately sold 12-inch Chill Hybrid. Cocoon describes the hybrid as pairing memory foam with coils; shoppers who prefer a spring-based construction may want to compare it. The models can feel different, so do not transfer the foam mattress’s scores to the hybrid.
Cooling and everyday use
Cocoon describes a phase-change cover designed to feel cool to the touch, with memory foam below. That initial sensation is not a guarantee of a cool night: sheets, protectors, room temperature and individual preferences also matter. The brand says to spot-clean the cover rather than remove or machine-wash it, and to open the compressed mattress within 30 days of receipt.
Trial and warranty
Cocoon describes a 100-night trial for eligible direct orders, beginning on delivery, with return pickup arranged at no charge. Its pages differ in whether 30 nights is a recommendation or an expected break-in period, so confirm the current terms before ordering. Purchases from other retailers follow their own return policies. The brand lists a 10-year limited mattress warranty; check the exact written terms and your foundation before buying.
Shopping verdict
Consider the foam model if you prefer a conforming feel and motion isolation in a relatively low-profile bed. Compare another option if you want a more buoyant surface or depend heavily on the edge for sitting. Yawnder’s expected-durability score is an assessment, not proof of a specific lifespan. Prices and promotions change; use the current-price link below for the actual offer.
Sources: Cocoon mattress details, trial FAQ and break-in guidance.
Check current price and promotion →
Yawnder Reviews · Disclosure: Brand links may be affiliate links. Test scores come from the standardized Yawnder record; pricing and policies can change.
Frequently asked questions
Does the Chill Hybrid get the same test scores?
No. The scores in this review refer to the 10-inch Chill Memory Foam mattress, not the separately sold hybrid.
Will a cool-to-the-touch cover keep everyone cool all night?
Not necessarily. A cover’s initial feel is different from overnight temperature, which also depends on bedding, the room and the sleeper.
How long is the trial?
Cocoon describes a 100-night trial for eligible direct purchases. Confirm the latest terms and any break-in requirement with the seller.
Compare this mattress against 142 tested mattresses
Sort all 142 mattresses we have tested by pressure relief, support, cooling, motion isolation, edge support, price, trial and warranty, then filter by how you actually sleep. Of those, 84 hold a complete standardized record and 41 a partial standardized record.