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Zox Helmet Size Chart

Adult
Size Inches CM Hat Size
2XS 20 1/8 - 20 1/2 51 - 52 6 3/8 - 6 1/2
XS 20 7/8 - 21 1/4 53 - 54 6 5/8 - 6 3/4
S 21 5/8 - 22 55 - 56 6 7/8 - 7
M 22 1/2 - 22 7/8 57 - 58 7 1/8 - 7 1/4
L 23 1/4 - 23 5/8 59 - 60 7 3/8 - 7 1/2
XL 24 - 24 3/8 61 - 62 7 5/8 - 7 3/4
2XL 24 3/4 - 25 1/2 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 1/8 - 27 1/2 69 - 70 8 5/8 - 8 3/4

Measure the largest portion of your head horizontally with a cloth tape, measuring approximately one inch above your eyebrows and ears. If your head size is between two helmet sizes, first try the smaller size. A correctly fitting helmet should not be able to move from side to side and up and down with the chinstrap fastened for a safe fit. If it is not snug, try a size smaller. Consider purchasing other size cheek pads or helmet liners to improve fit. Some helmets are designed with exchangeable cheek pads and liners; allowing smaller cheek pads or liners, in a slightly larger helmet or visa versa.

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.