Size Charts for Anon Helmets
Adult Helmets
| Size | Circumference |
| X-Small | 53-55cm |
| Small | 55-57cm |
| Medium | 57-59cm |
| Large | 59-61cm |
| X-Large | 61-63cm |
| XX-Large | 63-65cm |
Adult BOA Fit Helmets
| Size | Circumference |
| Small | 52-55cm |
| Medium | 56-59cm |
| Large | 60-64cm |
Youth Helmets
| Size | Circumference |
| Small | 49-51cm |
| Medium | 51-53cm |
| Large | 53-55cm |
| X-Large | 55-57cm |
Youth BOA Fit Helmets
| Size | Circumference |
| Small/Medium | 48-51cm |
| Large/X-Large | 52-55cm |