CWX WOMEN’S 3/4 LENGTH STABILYX TIGHTS JOINT SUPPORT LEGGINGS SIZE MEDIUM Provide optimum targeted support to the core and knees. The patented CW-X Support Web™ bands together the muscles and ligaments of the lower leg to stabilize the knee and reduce vibration for increased efficiency. The CW-X Support Web™ also harnesses the midsection, supporting the lower abdominals, hips and back to channel power through the core. Variable compression facilitates circulation during and after activity, minimizing lactic acid build-up so that you can be active longer and recover faster.