Oakley Helmet Size Chart
Oakley Helmet Size Chart
| Size | Head Circumference (cm) |
| S | 51-55 |
| M | 55-59 |
| L | 59-61 |
| XL | 61-63 |
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| Size | Head Circumference (cm) |
| S | 51-55 |
| M | 55-59 |
| L | 59-61 |
| XL | 61-63 |