Features. This practical hinged knee support is extremely lightweight and recommended for mild ligament injury knee instability or degenerative joint disease.. Ideal for walking or light activities.. Provides medial and lateral stabilization.. Hinges are made of an ultra light space-age composite material that is strong and durable.. Hinges include stops to help prevent the knee from hyper extending.. Unlike neoprene the base foam material is breathable and cool with less bulk..