On a big mountain day you'll want to protect your noggin with the lightweight and low profile shape of one of the most popular helmets on the market - the Giro G10 Helmet. This all-mountain ski / snowboard helmet features three ventilation settings and an incredible fit that makes it perfect for whatever the mountain throws at you. Its in-mold protective shell fuses a tough polycarbonate outer shell with impact-absorbing foam liner for extra durability. The G10's In Form(TM) system makes it easy to dial in a custom fit in seconds - even with gloves while on the fly. Fourteen Super Cool vents give you a cool head when cliffing-out, as the Thermostat control button on the outside of the helmet allows you to custom tune airflow to instantly blow off steam after being last run close gated. This snow helmet's ergo-friendly dial at its base provides up to 6 cm of adjustment and enhanced stability along with a vertical tuning feature that accommodates different goggles and head shapes for a custom fit. Compatible with all aftermarket TuneUps systems, the Giro G10 Helmet is the head protection of choice from Pros to weekend warriors.