Large - The Imak Products Smart Glove is designed to ease wrist pain caused by: Repetitive Motion Injury De Quervains Syndrome Carpal Tunnel Syndrome Pregnancy-related Carpal Tunnel Syndrome Arthritis Tendonitis Cramping and Fatigue The Smart Glove Wrist Support is designed specifically for keyboard, laptop, and mouse use. The smart glove pad is filled with ergoBeads cushions and protects the underside of your wrist and the pisiform bone. This bead-filled pad helps raise your wrist to an ideal ergonomic position. The Smart Glove Wrist Support fits both hands. To switch hands, simply turn it inside out. Soft cotton Lycra ensures cool comfort throughout the day. A removable splint provides flexible support to the wrist. Smart glove is Machine washable Latex free. Ian MacMorran, M.D., an orthopedic and hand surgeon, developed the patented Smart Glove for his patients. Delighted patients and customers say every day how much the Smart Glove is helping them. They report that for the first time they are experiencing thumb pain relief, carpal tunnel relief and how the Smart Glove helps them in preventing repetitive stress injury. To find your size, measure the palm of your hand, just under your fingers. Small up to 3 1/4" Medium up to 3 3/4" Large up to 4 1/4" For hygienic reasons we can not accept returns on supports, gloves and braces once they are worn.