Stormy Kromer Mens Hat size chart

* 7 3/8 is the most common men's cap size

SIZING  IN" CM' HAT SIZE
XS 20 3/8 52 6 1/2
20 3/4 53 6 5/8
21 1/8 54 6 3/4
S 21 1/2 55 6 7/8
21 7/8 56 7
M 22 1/4 57 7 1/8
22 5/8 58 7 1/4
L 23 59 7 3/8
23 1/2 60 7 1/2
XL 23 7/8 61 7 5/8
24 1/4 62 7 3/4
XXL 24 5/8 63 7 7/8
25 64 8