Protekt Gel Overlay uses a series of gel bladders between high density contoured foam for pressure redistribution. It is an optimal overlay surface for the prevention and treatment of pressure ulcers. The gel bladders contain an aqueous gel composition that provides deep immersion. The nylon top cover is fluid resistant, vapor permeable and anti-microbial/anti-bacterial. The bottom vinyl cover has 4 elastic corner straps that secures overlay to the mattress. Size: 34”x76”x3.5”.