The Diamond Dreamstage (Medium) from Diamond Mattress is a hybrid mattress with a medium feel that works for many side and back sleepers, and for combination sleepers who switch positions.
Inside the Diamond Dreamstage (Medium)
Diamond Dreamstage (Medium)
15.5" tall
Diamond Mattress · Hybrid · Firmness 6/10
Hover or tap a layer to slide it out
Layer breakdown
Polyfoam comfort layer
2″ 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
2″ 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
2″ thick · 1.5 lb/ft³ density
At 1.5 lb/ft³ this foam sits under the ~1.6 lb/ft³ we'd want from polyfoam — low-density foam tends to soften and take body impressions sooner, especially under heavier sleepers.
Coil support core
8.75″ thick · 14-gauge steel
An open coil core is the best airflow a mattress can have — body heat vents out instead of building up.
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.
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