This cushion works two ways to provide the patient with the ultimate in comfort and support. First, the molded, contoured top provides positioning assistance, distributes the patient�s weight more effectively and equalizes pressure. Second, the gel bladder is positioned directly beneath the patient�s ischials and coccyx areas, in a cutout area at the base of the molded foam top, for added support. Gel provides optimal weight distribution and prevents bottoming out. Comes standard with stretch knit nonskid cover