Today's pitchers throw harder, and shots off the bat are faster than ever. As the industry leader in protective our engineers could not sleep until our gear matched the speed of the game. Introducing the New Mach Batting Helmet. Engineered to perform. • Attached EXT flap: high visibility design that provides additional facial coverage = confidence at the plate • TPU rubber piece concealing hardware for seamless design • Sizing: Senior (SR): 6 7⁄8–7 5⁄8, Junior (JR): 6 3⁄8–7 1⁄8. Flap on right side for a Left Hand Batter.