Serta Perfect Sleeper X
Score: 80/100
Beautyrest World Class Level Three Queen
Score: 79/100Rankings
The Serta Perfect Sleeper X Knox is a 13.5-inch firm hybrid mattress featuring five support zones and graphite-infused memory foam for cooling. Its edge support is standard and independent testing is lacking, which may concern some buyers. Best suited for back or stomach sleepers seeking firm support.
The Beautyrest World Class Level Three is a 16-inch plush pillow-top innerspring mattress with pocketed coils, multiple cooling foams, and motion isolation. Its substantial weight and limited technical details may be drawbacks for some buyers. Perfect for side sleepers seeking a luxurious, soft feel.
| Attribute | | |
|---|---|---|
34.29 cm | 40.64 cmbest | |
152.4 cmbest | 152.4 cmbest | |
201.93 cmbest | 201.93 cmbest | |
10 yearsbest | 10 yearsbest | |
100 daysbest | 100 daysbest | |
5best | — | |
| ↓ lower better | 35.64 kgbest | 51.78 kg |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Features(1) | ||
Cooling Technology | Graphite infused | InfiniCool MAX |
Construction(2) | ||
Hybrid Construction | true | false |
Foam Type | Perfect Conform, Graphite infused | High Density, ActiveResponse MAX Memory, SurfaceTouch Gel |
Dimensions(2) | ||
Height (cm) | 34.29 cm | 40.64 cm |
Weight (kg) | 35.64 kg | 51.78 kg |
Products in the top-left offer the best value (high score, low price).
Professional reviewers and editors are not cited in the available sources; the product listings rely on marketing language without independent validation or third-party testing.
No consumer reviews or feedback were found in the sources, so sentiment cannot be assessed.
