FIT GUIDE
ONE HELMET
- Find a Measuring Tool: Use a string, shoelace, or USB cable to wrap around your head just above the eyebrows.
- Mark & Measure: Mark where string overlaps and measure against a ruler or yardstick.
- Choose Your Size: Use the above chart to select your size.
Size
Head Circumference
S
21¼-22⅜ inch
(54-57 cm)
M
22⅜-24⅜ inch
(57-62 cm)
In between sizes? We recommend sizing up.