S
S
M
M
L
L
XL
XL
XXL
XXL
XXXL
U. S.
6 3/4
6 7/8
7
7 1/8
7 1/4
7 3/8
7 1/2
7 5/8
7 3/4
7 7/8
8
Centimeters
54
55
56
57
58
59
60
61
62
63
64
Head Size (inches)
21 ΒΌ
21 5/8
22
22 1/2
22 3/4
23 1/4
23 5/8
24
24 1/2
24 3/4
25 1/4