p Patented breathable neoprene. Wrap-around design for easy application. /p p Composition: 70% Neoprene, 15% Polyester, 15% Stretch nylon /p p Size: /p p * Measure the circumference of the knee at the patella with knee fully extended /p p Free size : 31.8 - 40.6 cm 12.5 - 16 inch /p