Alpinestars Missile Tech MTB Mountain Bike Helmet Black SM

Outer shell is constructed using a blend of aramid fiber and fiberglass for strength and lightness Smooth profile is streamlined and free of any external features that might act as a load point in impact 22 vents for maximum movement of air and ventilation Removable air vent on the chin for additional movement of air Removable Replacement Part Air Filter on mouth opening for easy cleaning