| HAT SIZE | US(INCHES) | |
| S | 6 3/4 - 6 7/8 | 21 1/8 - 21 1/2 |
| M | 7 - 7 1/8 | 21 7/8 - 22 1/4 |
| L | 7 1/4 - 7 3/8 | 22 5/8 - 23 |
| XL | 7 1/2 - 7 5/8 | 23 1/2 - 23 7/8 |
Place measuring tape around your head right above your ear, across the mid-forehead, completely circling your head. Hold the tape firmly, but not too tightly. Basically, you need to measure your head exactly where the hat will sit.
