The SX01 offers compression and support in a soft, form-fitting pull-on brace. Bilateral polycentric hinges offer strength and limit hyperextension. Airprene Construction: Designed as orthopedic support for athletes to aid in performance or rehab. PolyCentric Hinge: The hinge has two central points to provide a more accurate knee movement giving the rider a natural feel while riding. Aircraft-grade aluminum hinges. Single Hyperextension Lockout: This is a component in the hinge designed to prevent hyperextension the most common knee injury in action sports. Removable Knee Cups: To provide dual usage in performance and recovery. Moisture-Wicking Bio Foam Liner: This liner provides a soft cushion support.