Yawnder Reviews · Updated September 2026
Cocoon by Sealy Chill Review: Cooling Foam Re-Tested
We tested Cocoon by Sealy Chill with the standardized Yawnder mattress protocol in August 2026 and rebuilt this page around the model-specific record.
Side-by-side scores, prices, trials and warranties against 142 tested mattresses.Compare this mattress →
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 | $999 |
| 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.
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Yawnder Reviews · Disclosure: Brand links may be affiliate links. Test scores come from the standardized Yawnder record; pricing and policies can change.
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, 86 hold a complete standardized record and 41 a partial standardized record.