Trust Canterbury of New Zealand to give you superior protection while playing your toughest matches. * The aero matrix design of this headgear provides greater comfort and maximum ventilation to keep your head as cool as possible throughout the course of a match. * Superior closed cell foam is ultralight, breathable, and flexible while offering the best protection that IRB guidelines allow. * The moisture wicking inner lining and antimicrobial treated foam and nylon elastane outer ensure a clean and safe product. Cross lace system in back with a fully adjustable chin strap. * SIZING: X Small 50 57cm 19.5 22 Small 50 57cm 22.5 23 Medium 50 57cm 23 24 Large 50 57cm 24.5 25.5 XLarge 50 57cm 25.5+