The Boot Jack - Hats & Caps Sizing Chart
| Size | Head Circumference (inches) |
|---|---|
| 6 1/2 | 20 1/4 - 20 5/8 |
| 6 5/8 | 20 3/4 - 21 1/8 |
| 6 3/4 | 21 1/4 - 21 5/8 |
| 6 7/8 | 21 3/4 - 22 1/8 |
| 7 | 22 1/4 - 22 5/8 |
| 7 1/8 | 22 3/4 - 23 1/8 |
| 7 1/4 | 23 1/4 - 23 5/8 |
| 7 3/8 | 23 3/4 - 24 1/8 |
| 7 1/2 | 24 1/4 - 24 5/8 |
| 7 5/8 | 24 3/4 - 25 1/8 |
| 7 3/4 | 25 1/4 - 25 5/8 |
| 7 7/8 | 25 3/4 - 26 1/8 |
| 8 | 26 1/4 - 26 5/8 |
| One Size Fits Most (OSFM) | 21 1/2 - 23 1/2 |