* Pressure Redistributing Cushion Designed To Assist In The Prevention Treatment And Management Of Pressure Ulcers. * Viscous Gel Bladder Is Encased In Polyurethane Foam Shell And Provides Optimal Pressure Redistribution Support And Comfort. * Cover Top Is A Urethane-coated Nylon That Is Low-shear Vapor Permeable And Water-resistant. * Cover Base Is Waterproof Vinyl For Durability. * Fluid Resistant Nylon Top. * Waterproof Vinyl Bottom. * Weight Capacity 275 Lbs. * Warranty Is 18 Months Limited.