Miasuki Helmet sizes
Helmet size guide Lining
| CIRCUMFERENCE | UM | SIZE |
| 51 | CM | M |
| 52 | CM | M |
| 53 | CM | M |
| 54 | CM | M |
| 55 | CM | M |
| 56 | CM | M |
| 57 | CM | M |
| 58 | CM | M |
| 59 | CM | L |
| 60 | CM | L |
| 61 | CM | L |
| 62 | CM | L |
| 6 3/8 | IN | M |
| 6 1/2 | IN | M |
| 6 5/8 | IN | M |
| 6 3/4 | IN | M |
| 6 7/8 | IN | M |
| 7 | IN | M |
| 7 1/8 | IN | M |
| 7 1/4 | IN | M |
| 7 3/8 | IN | L |
| 7 1/2 | IN | L |
| 7 5/8 | IN | L |
| 7 3/4 | IN | L |
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