High Resilience Foam with density 32,5-34,5 kg/m3. Hardness 130N (+/- 15%). Polyurethane mattress contour to the body exceptionally well thanks to low hysteresis and a reasonably good elasticity. They give good heat insulation and have reasonable moisture permeability. Mattress works well for allergy sufferers. The product is suitable for maximum body weight 80 kg. Mattress is without the cover, it can be purchased separately! Picture is illustrative!