To determine your head's circumference, you can use a measuring tape placed approximately 2 centimeters above your eyebrows. If you opt for a string, measure it from end to end using a ruler.
| Helmet Visor | Loop | |
| Small | 54-56 cm | - |
| Medium |
57-59 cm |
56-59 cm |
| Large |
60-62 cm |
60-63 cm |
