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Helmet Size Chart

03 Jul 2015


Adult Helmet Size Chart

Please note that this is a rough guide and not exact. The shape of your head is as important as the measurement which way affect the final fit. The fallowing size are an approximation and are based on average head size. In some cases variation may occur.

 Helmet Sizes  Head Girth Inch  Head Girth Met  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 3/8 - 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 - 64 cm 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

 

Children's Helmet Size Chart

 

 Helmet Sizes  Head Girth Inch  Head Girth Met  Hat Sizes
 S 17 5/8" - 18" 45 - 46 cm Infant/Toddler
 M 18 1/8" - 18 1/2" 46 - 47 cm Toddler/Youth
 L 18 5/8" - 19" 48 - 49 cm Youth

 

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