Helps relieve pain from muscular overuse caused by work, sports, or injury. Provides targeted compression to the long tendons of the forearm allowing them to remain parallel and pain-free. Dual-action compression works simultaneously to treat lateral and medial epicondylitis (forehand and backhand tennis elbow). Ideal for epicondylitis, tennis elbow, and muscle strains. Provides relief from Carpal Tunnel Syndrome, arthritis, and tendinitis. A comfortable shock absorbing liner also helps wick moisture away from the skin. Fits left or right arm.