The Giro S4 helmet offers serious performance in a low-profile style for
riders who crave action. Giro stole the basic shape of the S4 from skate helmets. But goggles fit this version way better, thanks to Giro?s Goggle
Notch and wide-angle cut. The Injection molded ABS shell and lightweight EPS liner offer proven, steady performance. 12 Vents with Weatherstrip
vent plugs let your brain breathe or seal out cold and snow.