Five different zones of anatomically designed dye cuts help minimize pressure and skin shear from head to foot. Visco elastic foam conforming top layer, with an advanced center layer, cradles the fragile bony prominences of heels and ankles and helps reduce pressure and prevent friction. Flame retardant, fluid-proof top cover helps minimizes friction to help prevent skin shear. Smaller cuts in the trunk help lower shearing forces while providing skeletal support. Inverted side seam seals top and bottom to provide superior protection against fluid penetration. Brass vents allow the mattress to breathe. Slip-resistant vinyl bottom material withstands day-in, day-out institutional use. 7-Year warranty