Made for the best backstops in the game, the PRO-SRZ Catcher's Helmet features a Windpact shock-absorbing padding system that disperses impact energy, a durable steel facemask designed for maximum field of vision, and an innovative design for a better fit and performance.Size Range Determined by Fitted Hat Size: Small [ 6 1/2" - 7"], Medium [7" - 7 1/2"], Large [7 1/2" - 8"]