The 39THIRTY® is a casual cap with a stretch fit. It is a structured cap with a pre-curved visor. The 39THIRTY® has a contoured crown and six panels. The cap has eight rows of visor stitching with eyelets on all panels.
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, buy the larger size.