Please note that although the following is the official measurements, we have received feedback from our customers that this helmet fits very tight.
If you are in doubt, we recommend choosing one size larger.
| Size | Head Circumference (cm) |
| S | 51 - 55 cm |
| M | 55 - 59 cm |
| L | 59 - 63 cm |
| XL | 63 - 67 cm |
| Size | Head Circumference (in) |
| S | 20 - 21.6'' |
| M | 21.6 - 23.2'' |
| L | 23.2 - 24.8'' |
| XL | 24.8 - 26.4'' |
