New Era Get into the game without losing your cool. Spacer Mesh panels on hat back allow cooling ventilation on even the warmest days. Fabric 100% cotton in front two panels; 57/43 poly/cotton Spacer Mesh in mid and back panels Structure Structured Profile Mid Closure Stretch fit New Era products may not be resold without embellishment. Adult Sizes: S/M (6⅞-7¼), M/L (71⁄8-7½), L/XL (73⁄8-7¾)