DJ Support Neoprene Advanced Open Patella Knee Support provides comfortable compression and therapeutic warmth to weak or over stressed knees. For mild osteoarthritis, mild strains/sprains, weak knees. It is made up of the highest grade closed cell neoprene, covered with stretch nylon on both sides for comfort. Retains body heat to warm knee joint and increase blood circulation. How to Use: -Loosen straps and position the patella in the opening of the knee support. Fasten the shorter middle strap behind the knee joint securely. -Fasten the neoprene straps above and below the patella snugly.