Giro Nine Ski and Snowboard Helmet

For more than a decade, the Nine Ski Helmet has been a keystone staple in the Giro product line and is the product that started it all in performance snow helmets. The new Nine features an updated, streamlined low profile design, Thermostat Control and a full array of functional features that have made the Nine Giro's most enduring and popular design. In mold construction fuses a tough polycarbonate outer shell with the helmet's impact absorbing foam liner. The fusion process allows for better ventilation systems, making In mold helmets lighter and cooler than traditional helmets. Super cool vents with thermostat control which allows you to custom tune airflow instatntly with a simple, low profile control button on the outside of the helmet Stack Vent was developed based on research showing the majority of the warm air that can cause fogging exhausts from the center top vent of the goggle. Aligning the Stack Vent in the helmet with the vent of your goggles helps to keep them clear and fog free while maintaining total helmet and goggle integration Compatible with all aftermarket Giro audio systems Seamless compatibility with all Giro goggles Compliance: ASTM F2040 11 CE EN1077 Sizes: S 52 55.5cm, M 55.5 59cm, L 59 62.5cm, XL 62.5 65cm