Built with a comfortable fabric and supportive steel springs to help stabilize stiff or sore knees. Comes in 4 sizes measured around the knee.
Small: 12-14 inches/ 30-35 centimeters;
Medium: 14-16 inches/ 35-40 centimeters;
Large: 16-18 inches/ 40-45 centimeters;
X-Large: 18-20 inches/ 45-50 centimeters.