Official shield for the RK4 Helmet
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Adult Helmet Size Chart
Sizes | Inches | Centimeters |
---|---|---|
XS | 20 1/4 - 20 7/8 | 52 - 53 |
S | 21 - 21 5/8 | 54 - 55 |
M | 21 3/4 - 22 3/8 | 56 - 57 |
L | 22 1/2 - 23 1/8 | 58 - 59 |
XL | 23 1/4 - 24 | 60 - 61 |
XXL | 24 1/8 - 24 7/8 | 62 - 63 |