Knee braces are supports that you wear for a painful or injured knee. Some people use them to prevent knee injuries during sports. Braces are made from combinations of metal, foam, plastic, elastic material and straps.Sport Knee Brace is designed to offer compression and support to relieve pain associated with sprains, chronic knee instability, symptoms of overuse, joint pain and osteoarthritis. It also helps to prevent re-injury. Patella inlay helps reduce impact and offers extra comfort.