The DonJoy Reaction Knee Undersleeve replacement is made of 85% nylon/15% spandex. Compatible with the DonJoy Reaction WEB and the DonJoy OA Reaction WEB knee braces. To ensure a proper fit, take the measurement of your thigh and calf, 6 inches above and below your kneecap using a flexible type tape measure. Use the circumference you measure to choose your size. The DonJoy Reaction Undersleeve runs small. Should you measure between sizes, we recommend going up one size for optimum comfort and fit.

When used, helps extend the life your knee brace. Compatible with the DonJoy Reaction WEB and the DonJoy OA Reaction WEB knee braces. The DonJoy Reaction Knee Undersleeve replacement is made of 85% nylon/15% spandex.

Best Sellers Rank: See Top 100 in Health & Household. Color: Large. Age Range (Description): Adult. Use for: Legs. Size: Large. Brand: DonJoy. International Shipping: This item can be shipped to select countries outside of the U.S. Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. Country of Origin: Taiwan. : B00NOW5PKQ. Manufacturer: DONJOY. Date First Available: November 18, 2011. Department: Unisex. Item model number: DJ141KS12-L. Product Dimensions: 9 x 0.25 x 8 inches; 1.6 Ounces. Is Discontinued By Manufacturer: No.