| Giro Helmets | ||||||
XS | S | M | L | XL | XXL | |
Centimeters | 52-53.5 | 53.5-55.5 | 55.5-57 | 57-59 | 59-60.5 | 60.5-62.5 |
Inches | 20.5-21 | 21-21.75 | 21.75-22.5 | 22.5-23 | 23-23.75 | 23.75-24.5 |
Fitted Hat Size | 6.5 | 6.75 | 7 | 7.25 | 7.5 | 7.75 |