The new and improved Drive Medical Premium Guard Gel Foam Overlay optimizes pressure redistribution and comfort in the prevention, treatment and management of pressure ulcers. The new design ideally combines 15 gel bladders, high density foam shell and a vinyl support base. The improved design decreases the migration of the gel layer, so patient won't bottom out and the convoluted, egg crate, foam, top layer provides vastly improved comfort. Vinyl base is stain resistant and waterproof|New and improved gel overlay has an upgraded 300 lb weight capacity and optimizes pressure redistribution|15 gel bladders cover entire patient contact area|Full length "head-to-toe" gel bladders minimize "bottoming out" and "pitting"|New convoluted foam topper vastly improves patient comfort and air circulation|4 elastic corner straps secure overlay to mattress|Urethane coated nylon cover is water resistant and vapor permeable|Bladders contain an aqueous non-toxic gel and polystyrene beads|Designated head and foot sections