Giro Sizing Chart
Head circumference measurements are in centimeters, with inches shown for reference.
Adult Snow Helmet Size Guide:
| Size | Circumference (cm) | Circumference (in) |
|---|---|---|
| S | 52 - 55.5 | 20.5 - 21.9 |
| M | 55.5 - 59 | 21.9 - 23.2 |
| L | 59 - 62.5 | 23.2 - 24.6 |
| XL | 62.5 - 65 | 24.6 - 25.6 |
Youth Snow Helmet Size Guide:
| Size | Circumference (cm) | Circumference (in) |
|---|---|---|
| XS | 48.5 - 52 | 19.1 - 20.5 |
| S | 52 - 55.5 | 20.5 - 21.9 |
| M | 55.5 - 59 | 21.9 - 23.2 |
To measure your size: wrap a measuring tape around your head, keeping the tape level from front to back, then reference the chart above. 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 have the right size, use the fit system to dial in the final adjustment.
