The McDavid 414 Knee Strap is designed to reduce patellatendonitis pain caused by runner's and jumper's knee symptoms, andOsgood Schlatter's disease. The McDavid 414 Knee Strapprovides Level 2 support and direct compression over the patellartendon for relief. It features a tubular buttress designinside the neoprene band and an adjustable velcro closure toachieve a snug fit that won't slip while running and jumping. Theouter cover fabric prevents scratching or irritation of the skinduring use.