HJC CL-17 Series Helmets

SIZE Inches Centimeters Hat Size
XS 20 7/8 - 21 1/4 54-55 6 3/4 - 6 7/8
S 21 5/8 - 22 56-57 7 - 7 1/8
M 22 1/2 - 22 7/8 58-59 7 1/4 - 7 3/8
L 23 1/4 - 23 5/8 60-61 7 1/2 - 7 5/8
XL 24 - 24 3/8 62-63 7 3/4 - 7 7/8
2XL 24 3/4 - 25 1/4 63-64 7 7/8 - 8
3XL 25 5/8 - 26 65-66 8 1/8 - 8 1/4
4XL 26 3/8 - 26 3/4 67-68 8 3/8 - 8 1/2
5XL 27 1/4 - 27 5/8 69-70 8 3/4 - 8 3/4
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