EASE SORE LEGS AND RELIEVE PRESSURE ON YOUR BACK. Sleeping with your knees elevated can help improve circulation, soothe sore legs and ease pressure on your lower back. The KneezUp Leg Wedge positions your knees at a 30 degree angle, so muscles and joints can rest and rejuvenate. Durable medical grade foam. Soft velour cover is zippered, removable and machine washable. 17”x10”x7”.