Ladies ski helmet mens ski helmet application allround special features goggle compatible ventilation with ear pads adjustable size with y clip earpads removable ventilation adjustable ventilation construction in mold ventilation technology smith airevac 2 ventilation adjustable fit system boa fit system colour green type of helmet half shell helmet number of air vents 20 chinstraps adjustable padded security standards astm f 2040 en 1077 outer shel