Standard Hospital 35 X 76 X 3 Medicare Code E0185 Full Length Head To Toe Gel Bladders Minimizes Bottoming Out And Pitting New Convoluted Egg Crate Top Layer Vastly Improves Patient Comfort 4 Elastic Corner Straps Secures Overlay To Mattress. Urethane Coated Nylon Cover Is Water Resistant And Vapor Permeable Vinyl Base Is Stain Resistant And Waterproof Designated Head And Foot Sections Weight Capacity: 300 Lbs. 1 Year Limited Warranty On Cover And Mattress