Gray Nicolls helmets are designed to give maximum protection with the widest field of vision, to allow the players to be fully focused on the game. All GN helmets conform to the updated CA & ICC standard BS7928:2013 for cricket helmets 360 faceguard providing unparalleled jaw, ear and neck protection Close fitting grille with wide angle field of vision Foam inserts for additional ear protection EPS inner shell and ABS outer shell Premium fabric cloth covering with 3 air vents for superior ventilation Adjustable quick-release buckle Sizes: S (51-54cm) M (55-58cm) L (59-60cm) XL (61-62cm)