McDavid Dual Disc Hinged Knee Support The McDavid™ Dual Disc Hinged Knee Support is designed for full contact sports. Features a 3/16” thick thermal neoprene sleeve that provides therapeutic body heat retention and soft tissue support. Hinges with hyperextension stops on both sides of the knee. Polycentric hinge offers advanced support over simple hinged brace. Adjustable VELCRO® brand fasteners. Fits right or left knee. Sold individually.