Product details:

The Giro nine.10 uses an in-mold shell construction which fuses the polycarbonate outer shell with the helmets impact absorbing foam liner for extra durability without excess weight. A comfortable EPS liner with adjustable venting for your comfort. You get 14 supercharged vents so you can be as cool as you want to be. 10 of the vents have adjustable Weatherstrip Shield in the liner that can seal out cold and snow when closed and allow extra venting when opened. Brim- Built into the front of the helmet is a small brim that extends over your goggles keeping the snow off the top goggle vent. Stack venting- A small vent is built into the brim to allow better air flow ventilation for your goggles. Without stack venting built into the brim, you goggle can fog easier. Conforms to all ASTM F2040 and CE prEN1077 approved standards.