The self-adjusting criss-cross straps above and below kneecap provide maximum medial-lateral support. Ideal for weak, injured, arthritic knees. The soft, non-petroleum based, neoprene blend retains body heat to help relieve pain. promote healing, and kepp your knee flexible. Wraparound design for easy on and off. Side hinge pockets to help ensure hinge is in the correct position for your knee size. (One Size Fits Most)