To ensure a perfect wrist guard fit, measure hand circumference at the knuckles and match to the sizes listed below: * S 7.5 - 8.0 inches - M 8.0 - 9.0 inches - L 9.0 - 10.0 inches - XL -10.0 inches Plus * Top and bottom removable / replaceable impact-resistant ABS splints add to the versatility of this glove - EVA shock absorbing foam layers with double stitching for increased durability * Thick neoprene support strap ensures a secure fit - EZ pull on loop - Ideal for skateboarding, inline skating (roller blading), and roller derby