Hat Size Chart
| CM | AU | UK | USA | IN | SIZE |
| 51cm | 51 | 6 1/4 | 6 3/8 | 20 1/8 | XXS |
| 52cm | 52 | 6 3/8 | 6 1/2 | 20 1/4 | |
| 53cm | 53 | 6 1/2 | 6 5/8 | 20 1/2 | XS |
| 54cm | 54 | 6 5/8 | 6 3/4 | 20 7/8 | |
| 55cm | 55 | 6 3/4 | 6 7/8 | 21 3/4 | SM |
| 56cm | 56 | 6 7/8 | 7 | 22 | |
| 57cm | 57 | 7 | 7 1/8 | 22 1/2 | M |
| 58cm | 58 | 7 1/8 | 7 1/4 | 22 3/4 | |
| 59cm | 59 | 7 1/4 | 7 3/8 | 23 1/4 | L |
| 60cm | 60 | 7 3/8 | 7 1/2 | 23 5/8 | |
| 61cm | 61 | 7 1/2 | 7 5/8 | 24 | XL |
| 62cm | 62 | 7 5/8 | 7 3/4 | 24 1/2 | |
| 63cm | 63 | 7 3/4 | 7 7/8 | 24 3/4 | XXL |
| 64cm | 64 | 7 7/8 | 8 | 25 1/4 |