Giro Ratio Helmet matte black - XL

The Giro Ratio Helmet has the features of Giro premium helmets at a more accessible price. Under the elegant silhouette, there is a system for adjusting shape, ventilation and thermostat control. The Hard Shell Construction offers a sturdy outer shell attached to an EPS foam liner. The In Form Fit System facilitates deaeration in a custom fit in seconds, even with gloves on. An ergonomic dial at the base of the helmet provides up to 6 cm of fit and greater stability. Adjustable ventilation allows you to control the air flow instantly with a simple button on the outside of the helmet. The Stack Vent ventilation system was developed based on research that shows that most of the hot air that can cause fogging comes from the upper central ventilation of the mask. Aligning the Stack Vent vent of the helmet with the central vent of the mask helps keep it clear and free of fog. All Giro helmets and masks are compatible with each other.