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Thor Youth Helmet Sizing

Size Head (in)
Youth SM 18 7/8 - 19 1/4
Youth MD 19 5/8 - 20 1/2 - 20 7/8
Youth LG 20 1/2 - 20 7/8

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.