The General Use Gel/Foam "E" 2" Seat Cushion by Drive Medical is a pressure reducing cushion, designed to assist in the prevention, treatment and management of pressure ulcers. The viscous gel bladder provides optimized pressure reduction, support and comfort. The removable and replaceable zippered cover is made from a, urethane coated, nylon cover top, that is water resistant and vapor permeable and the base is vinyl for durability.