Giro - Bike Helmet Size Guide

Adults Super Fit

ADULT SUPER FIT SIZE	CIRCUMFERENCE
S	51 - 55 cm
M	55 - 59 cm
L	59 - 63 cm
XL	63 - 65 cm

Adults Universal

ADULT UNIVERSAL	CIRCUMFERENCE
Women Adult	50 - 57 cm
Unisex	54 - 61 cm
Extra Large	58 - 65 cm

 

Kids'

YOUTH SIZE	CIRCUMFERENCE
XS (Scamp Model)	45 - 49 cm
S (Scamp Model)	49 - 53 cm
XS (Dime Model)	47 - 51 cm
S (Dime Model)	51 - 55 cm
Universal Child	47 - 54 cm
Universal Youth (Ages 5+)	50 - 57 cm

 

How to measure your size

Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide.

Note: Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.