| Helmet Size | Head Circumference (CM) |
|---|---|
| XS | 53–54 |
| S | 55–56 |
| M | 57–58 |
| L | 59–60 |
| XL | 61–62 |
| XXL | 63–64 |
| XXXL | 65–66 |
| Size | Lining Code | 12 mm | 10 mm | 7 mm | 5 mm |
|---|---|---|---|---|---|
| XS | I | ○ | ● | ||
| S | II | ○ | ● | ○ | |
| M | III | ○ | ● | ○ | ○ |
| L | III | ○ | ○ | ● | ○ |
| XL | IV | ○ | ● | ○ | |
| XXL | V | ○ | ● | ||
| XXXL | V |
Legend: ● Standard ○ Optional
| Helmet Size | Thicker (mm) | Standard (mm) | Thinner (mm) |
|---|---|---|---|
| XS | 30 | 25 | 20 |
| S | 30 | 25 | 20 |
| M | 30 | 25 | 20 |
| L | 25 | 20 | 15 |
| XL | 25 | 20 | 15 |
| XXL | 20 | 15 | — |
| XXXL | — | — | — |
