To figure out what size you wear, you will need to find a flexible cloth or bendable plastic tape measure (or, use a string that you can then lay flat and measure). Measure the circumference of your head at the place where you would wear a hat, typically about 1/8-1/4 inch above your ears and across the mid-forehead, completely circling your head. Take the measurement in inches and refer to the chart below. If you are in between two sizes, choose the bigger size -you can always add filler to larger hat to make it fit smaller.
Inches | MM | Size |
6 3/4 | 21 | Small |
6 7/8 | 21.5 | Small |
7 | 22 | Medium |
7 1/8 | 22.25 | Medium |
7 1/4 | 22.75 | Large |
7 3/8 | 23 | Large |
7 1/2 | 23.6 | X-Large |
7 5/8 | 24 | X-Large |
7 3/4 | 24.25 | XX-Large |
7 7/8 | 24.75 | XX-Large |
8 | 25 | XXX-Lg |