Firm support. Helps reduce the chance of re-injury. L: Large 14.5-16.5 in., 36.8-42.0 cm. This Knee Support is carefully designed to provide comfort and fit to support your active life. Futuro offers a wide variety of quality products to support your active life. Each and every product is designed for comfort and fit combined with a natural appearance. Designed to provide firm and comfortable support. Designed to help support the knee cap (patella). Absorbent fabric helps pull perspiration away from skin. Helps relieve tired, aching muscles and joints. Reversible for right or left knee. How it works: The design of their quality Spiral Lift Knee Support reached out and embraced the weak and sore muscles above and below, supporting them like a firm, invisible hand. Not only does this product offer firm support, its design permits movement without slipping or rolling. It is easily reversible for left or right knee. Available only from Futuro. Hoe to determine your size: Measure around the knee at knee cap. Sizes are the same for both male and female, If you cannot find your size, pleases ask for assistance. Wear and care instructions enclosed. Small: 10.5-12.5 in., 26.7-31.8 cm. Medium: 12.5-14.5 in., 31.8-36.8 cm. Large: 14.5-16.5 in., 36.8-42.0 cm. X-Large: 16.5-18.5 in., 42.0-47.0 cm. Made in U.S.A.