This Giro Helmet size chart are meant to serve as a guide. We recommend trying on your helmet instore before riding to ensure the best comfort and performance.
Adult Helmets
Size | S | M | L | XL |
Head Circumference | 51-55cm | 55-59cm | 59-63cm | 63-64cm |
Adult Universal Helmets
SIZE | HEAD CIRCUMFERENCE |
Universal Womens | 50-57cm |
UA = Universal Adult | 54-61cm |
XL = Universal XL | 58-65cm |
Kids Helmets
SIZE | HEAD CIRCUMFERENCE |
XS (Scamp model) | 45-49cm |
S (Scamp model) | 49-53cm |
XS (Dime model) | 47-51cm |
S (Dime model) | 51-55cm |
Universal Child | 47-54cm |
Universal Youth (Ages 5+) | 50-57cm |