Designed to support & compress the tendons of the forearm extensor & flexor muscles, the Epi-Sport Epicondylitis Clasp can be used to help speed recovery from medial or lateral epicondylitis. This is the large version. With a Velcro-style fastening, it is easy to adjust, soft & comfortable to wear & allows unrestricted blood flow. To fit arm 30 to 30.5cm Measure 5cm below elbow