S/M M/L L/XL ON SIZE FITS ALL - MEN ONE SIZE FITS ALL - WOMEN

Numeric Size (in.) 6 3/4 - 7 1/8 7 - 7 1/8 7 1/4 - 7 5/8 6 3/4 - 7 5/8 6 3/4 - 7 3/8

Head Size (in.) 21 1/4 - 22 3/8 22 - 23 1/8 22 3/4 - 23 7/8 21 1/4 - 23 7/8 21 1/4 - 23 1/8

Head Size (cm) 54 - 57 56 - 59 58 - 61 54 - 61 54 - 59

Tips:  

- Measure the circumference of your head using a measuring tape. Wrap it around your head at the point where the hat will sit (about an inch above your eyebrows)

- If you're on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit.