Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Serta Classic Mattress (Enhanced)
Cocoon Chill
Comfort
Not lab tested
8.5/10
Support
Not lab tested
8.3/10
Cooling
Not lab tested
8.8/10
Edge Support
Not lab tested
8/10
Motion Isolation
Not lab tested
8.7/10
Durability
Not lab tested
8.4/10
Value
8.7/10
9.2/10
Blank cells mean that model has not completed our instrumented lab protocol, so we publish no measured score for it. We never estimate a number we have not recorded.
Quick Specs Comparison
Spec
Serta Classic Mattress (Enhanced)
Cocoon Chill
Price (Queen)
$599
$619
Type
Hybrid
Memory Foam
Firmness
6/10
5.5/10
Height
Varies by comfort level
10 inches
Trial
120 nights
100 nights
Warranty
10 years
10 years
Shipping
Free shipping
Free shipping
Key Advantages
Why Choose Serta Classic Mattress (Enhanced)
- Gel memory foam adds real pressure relief over the base Classic
- Only $100 more than the Standard at queen
- Wrapped coils keep motion transfer moderate
Why Choose Cocoon Chill
- Affordable cooling option
- Backed by Sealy quality
- Phase-change cooling cover