Z1R HELMET SIZE CHART
| SIZE | INCHES | CM | HAT SIZE |
|---|---|---|---|
| X-SMALL | 20 7/8 – 21 1/4 | 53-54 | 6 5/8 – 6 3/4 |
| SMALL | 21 5/8 – 22 | 55-56 | 6 7/8 – 7 |
| MEDIUM | 22 3/8 – 22 3/4 | 57-58 | 7 1/8 – 7 1/4 |
| LARGE | 23 1/8 – 23 1/2 | 59-60 | 7 3/8 – 7 1/2 |
| X-LARGE | 24 – 24 3/8 | 61-62 | 7 5/8 – 7 3/4 |
| XX-LARGE | 24 3/4 – 25 1/8 | 63-64 | 7 7/8 – 8 |
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