Adult Street Helmet Sizing:
| Helmet Size | S | M | L |
| Head Circumference (cm) | 52 - 56 | 56 - 60 | 60 - 64 |
Adult Vio Helmet Sizing:
| Helmet Size | S/M | L/XL |
| Head Circumference (cm) | 55 - 59 | 59 - 62 |
Kids Helmet Sizing:
| Helmet Size | Toddler | Youth |
| Head Circumference (cm) | 48 - 52 | 52 - 56 |
