| SIZE | INCHES | CM | HAT SIZE |
| X-SMALL | 20 1/2 - 20 7/8 | 52-53 | 6 1/2 - 6 5/8 |
| SMALL | 21 1/4 - 21 5/8 | 54-55 | 6 3/4 - 6 7/8 |
| MEDIUM | 22 - 22 3/8 | 56-57 | 7 - 7 1/8 |
| LARGE | 22 3/4 - 23 1/8 | 58-59 | 7 1/4 - 7 3/8 |
| X-LARGE | 23 1/2 - 24 | 60-61 | 7 1/2 - 7 5/8 |
| XX-LARGE | 24 3/8 - 24 3/4 | 62-63 | 7 3/4 - 7 7/8 |