Allows healing and recovery after injury and decreases pain and inflammation of painful wrists and thumb tendonitis Size medium fits left wrist circumference 6 3/4" - 7 1/2" (17.1 - 19.1 cm) Two metal stays support wrist and thumb, adjust the amount of wrist extension with aluminum stay Circumferential design with D-ring closures makes the brace convienent and easy to put on and comfortable to wear Orignial beige wrist brace is made of cotton/polyester fabric lined with cotton stockinette and contains no latex