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Helmet Size Conversion Chart


Head Circumference - Inches Helmet Size Hat Size Head Circumference - Metric
19 3/4 - 20 1/8 Child S/M 6 1/8 - 6 1/4 49-50
21 1/4 Child L/XL 6 1/2 - 6 3/8 51-52
20 7/8 - 21 1/4 Child 2XL 6 5/8 - 6 3/4 53-54
20 - 20 1/2 2XS 6 3/8 - 6 1/2 51-52
20 7/8 - 21 1/4 XS 6 5/8 - 6 3/4 53-54
21 3/8 - 22 S 6 7/8 - 7 55-56
22 1/2 - 22 7/8 M 7 1/8 - 7 1/4 57-58
23 1/4 - 23 5/8 L 7 3/8 - 7 1/2 59-60
24 - 24 1/2 XL 7 5/8 - 7 3/4 61-62
24 3/4 - 25 1/4 2XL 7 7/8 - 8 63-64
25 5/8 - 26 3XL 8 1/8 - 8 1/4 65-66

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