Choose the right size:

To figure out your hat size, measure your head with a tape measure about a half-inch above your eyebrows where your hat will rest. If you don't have a tape measure, use a string and measure it against a ruler. If you are unsure or between sizes, we recommend buying the larger size.

Use the following information to determine your hat size:
Size S/M: Circumference (inches) 20 1/2 - 22 3/8
Size L/XL: Circumference (inches) 22 3/4 - 25