Mens ski helmet special features goggle compatible ventilation with ear pads adjustable size with y clip earpads removable audio compatible ventilation adjustable ventilation construction in mold adjustable fit system giro in form fit system colour green type of helmet half shell helmet number of air vents 14 security standards astm f 2040 en 1077 outer shell polycarbonate inner shell eps polystyrene series giro g10 weight 463 g