Giro Men’s Ratio Helmet Clearance

The Ratio™ helmet has the perfect ratio of everything you need to accompany you on the mountain, from its thermostat control adjustable venting to its laid-back style. The Ratio™ is a no-nonsense helmet that boasts the features found on premium helmets at a more accessible price. Beneath the sleek silhouette, you’ll find the adjustability of an In Form fit system, Thermostat Control adjustable venting and compatibility with aftermarket audio systems by Outdoor Tech.