Giro Helmet Size Guide
Sizing Overview
Fit should not be compromised for any other considerations. Head shape and sizing varies from customer to customer. Not every customer will fit every helmet. Adjustable helmets allow customers to fine-tune the fit for optimal protection and performance.
HOW TO ADJUST THE FIT
1. Adjust the fit system at the rear of the helmet for a snug, secure fit. Some helmets also include a vertical tuning feature that allows you to adjust the fore/aft tilt, for optimal positioning on your head.
2. Adjust the straps so that they sit just below the earlobes.
3. Adjust the buckle so that it rests against the back of the jaw/throat.
4. Adjust the interior pads if needed.
5. Check the fit to make sure the helmet is comfortable and secure. It should not roll forward or back, or be able to slide off.
How to measure
Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the size table below.
| Size | Circumference |
|---|---|
| X-Small | 48.5 - 52 cm |
| Small | 52 - 55.5 cm |
| Medium | 55.5 - 59 cm |
| Large | 59 - 62.5 cm |