The Giro Men's Switchblade Mips Bike Helmet is an ASTM downhill certified, full-face helmet with a removable chinbar so you can easily switch when it's time to descend! Another boast-worthy feature onthe Switchblade MIPS® is the Roc Loc Air DH fit system, which has a bumper around the dial to prevent accidental adjustments if your helmet contacts your backpack or neck brace-all while keepingyou cool. When the chinbar comes off, Wind Tunnel cheek pad ventilation adds even more cooling poweras you start to climb. Plus, the full-cut style gives this helmet an aggressive look and provides ASTM certified coverage even when the chinbar is removed. When your ride is all about descending, your helmet should be too, and the Switchblade MIPS® is the only removable chinbar helmet that is truly built for the down.