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One Industries

Warning Icon Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.

One Industries Adult Helmet Sizes
 X-SmallSmallMediumLargeX-Large2X-Large
Hat Size 6 5/8 - 6 3/4 6 7/8 - 7 7 1/8 - 7 1/4 7 3/8 - 7 1/2 7 5/8 - 7 3/4 7 7/8 - 8
Inches 20 3/4 - 21 1/4 21 5/8 - 22 22 1/2 - 22 3/4 23 1/4 23 5/8 24 - 24 1/2 24 2/4 - 24 5/8
Centimeters 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64

One Industries Youth Helmet Sizes
 Youth SmallYouth MediumYouth LargeYouth X-Large
Age 5-6 years 6-8 years 8-10 years 10-12 years
Hat Size 6 1/8 - 6 1/4 6 3/8 - 6 1/2 6 5/8 - 6 3/4 6 7/8 - 7
Measurement (in) 20 5/8 21 1/8 21 1/4 21 5/8
Measurement (cm) 49 - 50 51 - 52 53 - 54 55 - 56