Convert Sizing
Measure the circumference of your head using a cloth tape measure or a piece of string and a ruler. Use the chart below to find the proper helmet size based on your measurement.
| cm | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 |
|---|---|---|---|---|---|---|---|---|
| Small | ||||||||
| Medium | ||||||||
| Large | ||||||||
| X-Large | ||||||||
1 Head
Take your measurement horizontally across your brow and over your ears.





