Giro Ratio Mips Helmet WH Sizing holes added to improve

Sizing holes added to improve user experience

the ethically sourced wool keeps you warm whether it’s wet or dry and feels great against your skin

More treasure

Polyester content made from recycled polyester

the Bluebird is our classic do-it-all piolet

Giro Ratio Mips Helmet WH Sizing holes added to improveThe 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. The Ratio is also available with Mips which can offer more protection in certain impacts by redirecting impact energy. Features : CONSTRUCTION MIPS Multi