Wrap a tape measure around your head. Make sure to take the measurements in inches.
Getting the right size of your head is extremely important if you want the hat to fit you. If you measure falls between 2 sizes, choose the smallest one since the hats have a light weight to them so having them tight on your head is important.
Extra Small (XS): 22”
Small (S): 22 1/2″
Medium (M): 23″
Large (L): 23 1/2”