Cho-Pat Counter Force Knee Wrap Small 13 - 14.5 - Small - Fits knee circum. 13 - 14.5 (to measure take circumference at mid-kneecap) - A versatile and dynamic approach to knee degeneration resulting from old injuries arthritis wear and tear or normal aging - Pressure on the patellar tendons from two adjustable straps creates effective stabilization of the patella