The Ortho Bed Wedge provides support and elevation for the legs or feet. The large 10 in. slant is ideal for providing comfort for those with leg. ankle. or foot pain or ailments. A removable blue zippered machine washable poly/cotton cover. Tubular frame base keeps blanket off the feet to help prevent foot cramping and protect sensitive skin areas.FeaturesAdjustable Blanket Support.Height adjusts up to 19 in.Inserts between the box spring and the mattress.Rests on top of the mattress when not in use.