The Giro Ratio™ Snow Helmet offers the style, comfort and protection you need to enjoy the mountain. This helmet is made with a Hard-Shell Construction that consists of a rugged outer shell molded and then attached to the EPS foam liner. Its Thermostat Control™ Adjustable Venting allows you to custom-tune airflow instantly with a simple, low profile control button on the outside of the helmet, while the Stack Vent™ technology helps keep your goggles clear and fog-free. Pair up this helmet with your favorite Giro goggles for optimal performance, as they ensure a seamless interface for an exceptional fit and dependable, worry-free function. Enjoy the slopes with the Giro Ratio™ Snow Helmet!