Helmet Sizes
Head Circumference Inches
Head Circumference Metric
Hat Sizes
2XS
18 1/8" - 19"
46 - 49 cm
5 7/8 - 6
XS
19 1/8 "- 20"
49 - 51 cm
6 1/8 - 6 1/4
S
20 1/8" - 21"
52 - 54 cm
6 1/4 - 6 1/2
M
21 1/8" - 22"
54 - 56 cm
6 5/8 – 6 3/4
L
22 1/8" - 23"
57 - 59 cm
6 7/8 - 7
XL
23 1/8" - 24"
59 - 61 cm
7 1/8 - 7 1/4
2XL
24 1/8" - 25"
62 - 64cm
7 3/8 – 7 1/2
3XL
25 1/8" - 25 3/4"
64 - 65 cm
7 5/8 – 7 3/4
4XL
25 7/8" - 26 1/4
65 -66 cm
7 7/8 - 8
17 5/8" - 18"
45 - 46 cm
Infant/Toddler
18 1/8" - 18 1/2"
46 - 47 cm
Toddler/Youth
18 5/8" - 19"
48 - 49 cm
Youth
