General Use Gel 2" Seat Cushion 18" x 16" x 2" is a pressure reduction cushion designed to assist in the prevention, treatment and management of pressure ulcers. Viscous gel-bladder provides optimum support and comfort. Designed for clients who are at low risk for skin breakdown. Removable and replaceable cover that is zippered, constructed as follows: Cover top is a urethane coated nylon; Base is vinyl for durability. Cover top is water resistant and vapor permeable. Weight Capacity: 250 lbs.