The Plank Firm Luxe from Plank Mattress is a hybrid mattress with a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted.
Inside the Plank Firm Luxe
Plank Firm Luxe
12.25" tall
Plank Mattress · Hybrid · Firmness 8/10
Hover or tap a layer to slide it out
Layer breakdown
Polyfoam comfort layer
1.5″ thick · 1.5 lb/ft³ density
At 1.5 lb/ft³ this foam sits under the ~1.8 lb/ft³ we'd want from polyfoam — low-density foam tends to soften and take body impressions sooner, especially under heavier sleepers.
Polyfoam transition layer
1″ thick · 2.5 lb/ft³ density
Measured at 2.5 lb/ft³ — high-density foam like this resists softening and body impressions, one of the strongest longevity signals in a build.
Polyfoam transition layer
1″ thick · 1.8 lb/ft³ density
Measured at 1.8 lb/ft³ — solid polyfoam for average-weight sleepers, though heavier (200 lb+) sleepers would want closer to 2 lb/ft³ here.
Coil support core
6″ thick
An open coil core is the best airflow a mattress can have — body heat vents out instead of building up.
Polyfoam base layer
2″ thick · 1.8 lb/ft³ density
Measured at 1.8 lb/ft³ — clears the ~1.8 lb/ft³ durability bar we'd hold polyfoam to even under heavier (200 lb+) sleepers.
Polyfoam base layer
0.75″ thick · 1.5 lb/ft³ density
Measured at 1.5 lb/ft³ — solid polyfoam for average-weight sleepers, though heavier (200 lb+) sleepers would want closer to 1.8 lb/ft³ here.
Hover or tap a layer to see what it means for comfort and durability.
SquishMat may earn a commission if you buy through links on this page, at no extra cost to you. Commissions never influence which mattresses we recommend. How we make money
