HATS

Head in Inches
US Hat Size
Size
Metric
20 7/8
6 5/8
S
53
21 1/8
6 3/4
S
54
21 1/2
6 7/8
S
55
21 7/8
7
M
56
22 1/4
7 1/8
M
57
22 5/8
7 1/4
L
58
23
7 3/8
L
59
23 1/2
7 1/2
XL
60
23 7/8
7 5/8
XL
61
24 1/4
7 3/4
XL
62
24 5/8
7 7/8
2X
63
25
8
2X
64

Measuring your head: Use a tape measure and mesaure around the widest part of the head just above the eyebrows.