The SX02 offers compression and support in a soft, form-fitting pull on brace. Fully adjustable 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. Hyperextension Lockout 90: This is a component in the hinge designed to prevent hyperextension the most common knee injury in action sports. To accommodate the variety of knees and riding style you're able to adjust the hyperextension lockout from 0 to 90°. Removable Knee Cups: To provide dual usage in performance and recovery. Moisture-Wicking Bio Foam Liner: This liner provides a soft cushion support.