This game-changing baseball cap uses our R-Active, lightweight stretch fabric and features laser-vented back panels for maximum breathability and comfort. Available in three R-Flex sizes to fit all levels of play. Style STRETCH FIT Shape MidPro Fabric LITE Performance Poly-Stretch Visor UForm Sweatband StayDri Performance Stretch Fit and Size R-FLEX Xs-Sm (6 5/8 - 7) Sm-Md (7 - 7 1/4) Lg-Xl (7 3/8 - 7 5/8)