Side-by-side mattress testing · 144+ comparisons published
Updated May 2026
Category
Plank Firm
WinkBed
Comfort
8/10
9.2/10
Support
9.5/10
9.4/10
Cooling
8.5/10
9.3/10
Edge Support
9/10
9.5/10
Motion Isolation
8.5/10
9/10
Durability
9.2/10
9.4/10
Value
8.8/10
8.8/10
Quick Specs Comparison
Spec
Plank Firm
WinkBed
Price (Queen)
$749
$1,799
Type
Hybrid
Luxury Hybrid
Firmness
9/10
6.5/10
Height
11.5 inches
13.5 inches
Trial
120 nights
120 nights
Warranty
10 years
Lifetime
Shipping
Free shipping
Free shipping & returns
Key Advantages
Why Choose Plank Firm
- Flippable design - two firmness options
- Excellent for stomach sleepers
- Great spinal alignment
Why Choose WinkBed
- Four firmness options for every sleep style
- Breathable Tencel cover with gel foams
- Motion isolation and reinforced edge support
Lab Verdict
WinkBed held heat-neutral better than the Plank Firm (2.1°F surface rise vs. 3.5°F). Motion isolation was roughly equivalent; either is safe for a partnered sleeper. The WinkBed relieved more shoulder pressure for side sleepers (24 mmHg vs. 38 mmHg). The WinkBed held a firmer perimeter (1.7" sinkage vs. 2"). Combo sleepers will get more rebound from the Plank Firm (59% bounce vs. 48%).
| Metric | Plank Firm | WinkBed | Edge |
|---|---|---|---|
| Cooling (60-min Δ°F) | 3.5°F | 2.1°F | WinkBed |
| Motion isolation (g) | 0.13g | 0.12g | Tie |
| Edge sinkage | 2" | 1.7" | WinkBed |
| Shoulder pressure (mmHg) | 38 mmHg | 24 mmHg | WinkBed |
| Response time (s) | 0.5s | 0.3s | WinkBed |
| Off-gassing | 2 days | 0 days | WinkBed |
Median of 3 trials, 68°F climate-controlled lab. DH/NL / DH/NL · scoring vv2.1.