The RS9 Knee Brace is one leap forward for form-fitting knee brace design incorporating a redesigned chassis for improved airflow, updated buckle locations for improved connectivity and a fully removable / replaceable strapping system. Patented Tru-Motion 2.0 anatomically correct hinges. Dual Defense full coverage knee cup. Moisture-wicking bio-foam molded liner. ClickTec quick-release buckle system. FormFit frame. Adjustable hyper-extension lockouts.