The Mueller Knee Support features self-adjusting criss-cross straps which provide support and compression above and belove the patella. This knee wrap can be used to support weak, injured or arthritic joints. The flexible stays on both sides help to stabilize the knee by preventing medio-lateral (side to side) movement. The easy wraparound design with open back eliminates bunching behind the knee. It can be worn on the left or right knee. Measure 14” to 20” around the knee.