Sierra Says:
The MX part of the Giro G10 Helmet is the removable visor. A visor is a must have accessory for sunny days, so you do not get sunburned on sensitive areas. The G10 MX is the helmet for any rider, who wants the same helmet for a park day, powder day and spring day.
| Giro Helmet Sizing Chart |
| ADULT SIZING | YOUTH SIZING | CHILD SIZING |
| S = 52-55.5cm | S = 52-55.5cm | XS/S 49-54cm |
| M = 55.5-59cm | M = 55.5- 59cm | M/L 54-58cm |
| L = 59-62.5cm | |
Continental US: Free Shipping on orders over $50.00, PO Boxes Excluded
Orders to: PO Boxes, APOs, Hawaii, Alaska and Orders Under $50.00,
Shipping rates will be calculated at the shopping cart.
International Orders: Please refer to the International Shipping Page