Helmet Measurements:
- Measure circumference of head from center of forehead around head approximately 1.5cm above ears
- Measurement should be taken at widest part of the head
| Circumference (in) | Circumference (cm) | |
| S | 19 - 21-1/4" | 48 - 54cm |
| M | 21-1/2 - 23" | 55 - 58cm |
| L | 23-1/4 - 24" | 59 - 61cm |
Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.