Giro Ratio MIPS Helmet

The Ratio MIPS helmet has the perfect ratio of everything you need to accompany you on the mountain, from its thermostat control adjustable venting to its MIPS technology 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. The Ratio is also available with MIPS - which can offer more protection in certain impacts by redirecting impact energy.

- MIPS
- Hard Shell Construction
- Thermostat Control
- Stack Vent Technology
- Vertical Tuning
- In Form Fit System
- Electronics Compatibility: Compatible With Aftermarket Giro Audio Systems By Outdoor Tech
- Certification: CE EN1077
- Small = 52 – 55.5cm
- Medium = 55.5 – 59cm
- Large = 59 – 62.5cm
- X-Large = 62.5 – 65cm