Giro Helmet Size Guide

SIZE (CM)
SIZE (IN)
XS
47 - 51
18.5 - 20
S
51 - 55
20 - 21.75
M
55 - 59
21.75 - 23.25
L
59 - 63
23.25 - 24.75
XL
61 - 65
24 - 25.55
*The Large Quarter Bike Helmet is the following dimensions: Large: 23.25" - 24.25" / 59 - 61.5 cm
SIZE (CM)
SIZE (IN)
CHILD
50 - 55
19.75 - 21.75
YOUTH
50 - 57
19.75 - 22.5
ADULT
54 - 61
21.25 - 24
WOMEN
50 - 57
19.75 - 22.5
XL
58 - 65
22.75 - 25.5

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