OPTIMAL PROTECTION Meets ASTM F2040 and EN1077 Standards. Findway Ski Helmet is manufactured with advanced manufacturing techniques. The outer ABS shell is fused to the inner EPS foam creating an in-mold construction that allows the foam to absorb the shock from an impac. Adjustable Fit & Easy to Detachable You can adjust the size dial knob to make the ski helmet fit the head perfectly. The ear pad and lining of the snowboard helmet can be disassembled, which is convenient for you to disassemble and clean when you are not using it. KEEP COOL or WARM The snowboard helmet has 8 individual vents for keeping your head ventilated and dry.