The KneezUp Leg Wedge helps relax tired legs, soothe achy knees and comfort the lower back. Medical experts agree that sleeping with your knees elevated will help improve circulation to your lower extremities! Simply position the cushion below knees - the KneezUp Wedge elevates your knees to a 30 degree angle so joints and muscles can relax, rest and rejuvenate. Helps reduce pressure on the lower back by allowing the lumbar curve to flatten out. Designed for the treatment of varicose veins and phlebitis. Elevates knees to a 30 degree angle so joints and muscles can relax, rest and rejuvenate. Helps increase blood flow to the lower extremities.