The Swede-O Tennis Elbow Strap helps relieve muscle and elbow joint pain associated with golfer's elbow, tendonitis, lateral epicondylitis (tennis elbow), repetitive stress injuries, and supinator muscle strain. The counterforce design with compression panel applies pressure to the affected tendons, relieving stress on the injured portion. This helps improve grip strength and eases pain during activity. The strap's wraparound design offers easy application and adjustment. The latex free material is durable, yet soft and comfortable against the skin making it ideal for active lifestyles. Wear only during activity. Bilateral design fits right or left elbow. OSFM (one size fits most), measure around the widest part of forearm, fits 8-16 inches.