The Plank Firm Luxe (Extra Firm) 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 (Extra Firm)
Plank Firm Luxe (Extra Firm)
12.25" tall
Plank Mattress · Hybrid · Firmness 9/10
Hover or tap a layer to slide it out
Layer breakdown
Polyfoam comfort layer
0.75″ thick · 1.5 lb/ft³ density
1.5 lb/ft³ foam runs light, but at 0.75″ it's a surface quilt — too thin to drag durability down.
Polyfoam transition layer
2″ 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
1″ 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
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 base layer
1.5″ 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.
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