Giro says

Go deeper and further in the new brimmed Trig™MIPS helmet. This hard-shell freestyle helmet offers the peace of mind of MIPS with the dialed-in fit of the In Form Fit System. Thermostat Control Adjustable Venting allows for perfect airflow whether ascending or descending, and the Stack Ventilation keeps your goggles fog free no matter what your energy output. All this tech business is shielded in a progressive brimmed design guaranteeing Seamless Compatibility with Giro goggles. Check in with the Trig and check out for all your freestyle sessions and backcountry expeditions.