Pressure reducing cushion designed to assist in the prevention, treatment and management of pressure ulcers. Viscous Gel provides optimized pressure reduction, support and comfort. Fire Retardant polyurethane foam shell. Removable and replaceable cover has water resistant Top and Non-Slip vinyl base. 18 Month Limited Warranty on cover and cushion. Cushion Size: 24 x 18 x 3 300lbs.