Giro Ratio Mens Helmet 2026

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.

• Hard Shell construction: EPS foam liner
• Compatible with aftermarket Giro audio systems by Outdoor Tech
• Fit System - easy to dial in a custom fit in seconds, even with gloves on. Ergo-friendly dial at the base of the helmet that provides up to 6cm of adjustment and enhanced stability
• Seamless Compatibility with all Giro goggles:
• Seamless Compatibility with all Giro goggles
• Hard Shell construction produces great helmets at a great value. A rugged outer shell is molded and then attached to the
• EPS foam liner.
• Thermostat Control adjustable venting - allows custom-tuning of airflow instantly with a simple, low-profile control button on the outside of the helmet
• Stack Vent Technology"