Kids ski helmet application race special features ventilation adjustable size with ear pads goggle compatible with y clip earpads removable ventilation adjustable ventilation construction in mold ventilation technology uvex vent system adjustable fit system uvex ias system closure system monomatic buckle type of helmet half shell helmet chinstraps adjustable padded security standards astm f 2040 en 1077 b inner linings hypoallergenic breathable remova