Size Charts for Smith Helmets
Men's Helmets
| Helmet Model | X-Small | Small | Medium | Large | X-Large |
| Aspect | - | 51-55cm | 55-59cm | 59-63cm | 63-67cm |
| Camber | - | 51-55cm | 55-59cm | 59-63cm | 63-67cm |
| Gage | - | 51-55cm | 55-69cm | 59-63cm | 63-67cm |
| Holt | 52-54cm | 54-56cm | 56-58cm | 58-60cm | 60-62cm |
| Maze | - | 51-55cm | 55-59cm | 59-63cm | 63-67cm |
| Sequel | - | 51-55cm | 55-59cm | 59-63cm | 63-67cm |
| Vantage | - | 51-55cm | 55-59cm | 59-63cm | 63-67cm |
| Variance | - | 51-55cm | 55-59cm | 59-63cm | 63-67cm |
| Quantum | - | 51-55cm | 55-59cm | 59-63cm | - |
| Pivot | - | 51-55cm | 55-59cm | 59-63cm | - |
Women's Helmets
| Helmet Model | Small | Medium | Large |
| Allure | 51-55cm | 55-59cm | 59-63cm |
| Arrival | 51-55cm | 55-59cm | 59-63cm |
| Compass | 51-55cm | 55-59cm | 59-63cm |
| Gage | 51-55cm | 55-59cm | 59-63cm |
| Intrigue | 51-55cm | 55-59cm | 59-63cm |
| Valence | 51-55cm | 55-59cm | 59-63cm |
| Vantage | 51-55cm | 55-59cm | 59-63cm |
| Voyage | 51-55cm | 55-59cm | 59-63cm |
| Pointe | 51-55cm | 55-59cm | 59-63cm |
Kid's Helmets
| Helmet Model | Small | Medium |
| Gage | 48-53cm | 53-58cm |
| Holt | 48-53cm | 53-58cm |
| Upstart | 48-53cm | 53-58cm |
| Zoom | 48-53cm | 53-58cm |