Size guide Helmets SHIRO 
Shiro Helmets
| Size | Head circunference |
| YS Kid | 49-50 cm |
| XXS / YM Kid | 51-52 cm |
| XS / YL Kid | 53-54 cm |
| S | 55-56 cm |
| M | 57-58 cm |
| L | 59-60 cm |
| XL | 61-62 cm |
| 2XL | 63-64 cm |
| 3XL | 64-65 cm |
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