The knee joint includes the tibiofemoral, patellofemoral and superior tibiofibular joints. There are two menisci which are semilunar-shaped discs of fibrocartilage between the femoral condyles and tibial plateaus. Their main functions are shock absorption and stability enhancement. There are many ligaments to provide stability and prevent excessive motion. Neoprene circle pad around the patella provides padded protection and stabilization to prevent patella displacement. Two medial and lateral stays provide additional support and stability for the knee.Two medial and lateral stays provide additional support and stability for the knee. Two hook and loop straps insure comfortable fit and stabilization during activities. Helps relieve pain from tendinitis and arthritis. Retains body heat to warm knee joint and increases blood circulation.