Side-by-side mattress testing · 144+ comparisons published
Updated May 2026
Category
Nolah Evolution 15
Leesa Sapira Hybrid
Comfort
9.3/10
9/10
Support
9.2/10
9.1/10
Cooling
9.1/10
8.8/10
Edge Support
9/10
8.7/10
Motion Isolation
9.2/10
9/10
Durability
9.1/10
8.9/10
Value
9/10
8.8/10
Quick Specs Comparison
Spec
Nolah Evolution 15
Leesa Sapira Hybrid
Price (Queen)
$1,199
$1,199
Type
Hybrid
Hybrid
Firmness
6/10
6/10
Height
15 inches
11 inches
Trial
120 nights
100 nights
Warranty
Lifetime
10 years
Shipping
Free shipping
Free shipping
Key Advantages
Why Choose Nolah Evolution 15
- AirFoam doesn't trap heat like memory foam
- Excellent pressure relief
- Tall 15" profile feels luxurious
Why Choose Leesa Sapira Hybrid
- One donated for every 10 sold
- Premium pocket spring system
- Good balance of comfort and support
Lab Verdict
Cooling was a wash — both mattresses landed within half a degree of each other after 60 minutes of body heat. Couples should note that the Nolah Evolution 15 dampened motion more aggressively (0.09g peak vs. 0.11g). Pressure mapping put both beds well under the 32 mmHg capillary-closure threshold for side sleepers. Perimeter compression was nearly identical — neither bed is the obvious pick on edge support alone. Combo sleepers will get more rebound from the Nolah Evolution 15 (58% bounce vs. 41%).
| Metric | Nolah Evolution 15 | Leesa Sapira Hybrid | Edge |
|---|---|---|---|
| Cooling (60-min Δ°F) | 3°F | 3°F | Tie |
| Motion isolation (g) | 0.09g | 0.11g | Tie |
| Edge sinkage | 2" | 1.8" | Leesa Sapira Hybrid |
| Shoulder pressure (mmHg) | 30 mmHg | 29 mmHg | Leesa Sapira Hybrid |
| Response time (s) | 0.6s | 0.4s | Leesa Sapira Hybrid |
| Off-gassing | 2 days | 1 days | Leesa Sapira Hybrid |
Median of 3 trials, 68°F climate-controlled lab. KW/BT / KW · scoring vv2.1.