ContourSleep Convertible Leg WedgeThe ContourSleep Convertible Leg Wedge by Relax The Back allows you to relax, read or sleep, free from back pain and muscle spasms. The wedge can be opened or closed to allow for the exact position you need to elevate and ease strain on the knees. When used with the ContourSleep Back Wedge, the ContourSleep Convertible Leg Wedge allows you to recline in the zero gravity position. Elevates legs to reduce swelling in legs and knees Zero gravity position