The Patella Knee Strap is made of Neoprene & Nylon and is a universal size. This knee strap is useful for pain related to patella tendinitis, runners or jumpers knee, and other minor knee pain possibly related to Osgood-Schlatter disease. Loop & lock design provides focused compression over the shock absorbing buttress. Neoprene support with nylon facing on both sides. Fully adjustable Velcro closure assures a snug fit.