What is the Mc David Knee Sleeve? The Mc David Knee Sleeve is specifically designed to relieve symptoms of arthritis, bursitis & tendonitis. The compression fit optimises blood flow around the injured area to assist in recovery & keeps the area warm & dry. Ideal for those allergic to neoprene, the 4-way stretch increases compression on the target area & holds the sleeve in place. How does it work? Featuring a gel insert compression buttress which holsters the soft tissue & patella, the Mc David Knee Sleeve is designed for pre, post or during sport use. With a 65% polyester/25%rubber & 10% nylon make up, the Knee Sleeve is ideal for those with neoprene allergies. Size guide Measure around leg from the centrepoint of the knee. S: 12-14" M: 14-15" L: 15-17" XL: 17-20"