Built for backcountry adventures, side country slashes, and in bounds action, the ultra lightweight Montane Helmet was constructed with Progressive Stack Ventilation, a low profile, and a Trip Clip helmet carry system to conveniently hook it to your pack. In mold construction. Roc Loc 5 Fit system. On The Fly Vertical Tuning. Thermostat Control Adjustable Venting. Super Cool Vents. Stack Ventilation. X StaticAR anti bacterial padding. Trip Clip helmet carry system. Compatible with all aftermarket Giro audio systems. Compatible with all Giro goggles. Imported.