Kids ski helmet special features goggle compatible ventilation with ear pads earpads removable construction in mold adjustable fit system uvex ias system closure system monomatic buckle colour grey type of helmet half shell helmet security standards astm f 2040 en 1077 b en 1077 a inner linings washable hypoallergenic removable outer shell polycarbonate inner shell eps size adjustments infinetly adjustable rotary adjustment system weight 350 g sea