Helmet Size Chart
Adult Helmets
Size
X-Small
Small
Medium
Large
X-Large
2X-Large
3X-Large
4X-Large
Centimeter
54 - 55 cm
56 - 57 cm
58 - 59 cm
60 - 61 cm
62 - 63 cm
64 - 65 cm
66 - 67 cm
68 - 69 cm
Inches
21 1/4" - 21 5/8"
22" - 22 7/16"
22 13/16" - 23 1/4"
23 5/8" - 24"
24 3/8" - 24 13/16"
25 3/16" - 25 5/8"
26" - 26 3/8"
26 3/4" - 27 1/8"
Hat Size
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 - 8 1/8
8 1/4 - 8 3/8
8 1/2 - 8 5/8
Youth Helmets
Size
Youth Small
Youth Medium
Youth Large
Centimeter
53 - 54 cm
54 - 55 cm
55 - 56 cm
Inches
20 7/8" - 21 1/4"
21 1/4" - 21 5/8"
21 5/8" - 22"
Hat Size
6 5/8 - 6 3/4
6 3/4 - 6 7/8
6 7/8 - 7
Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.