Fit Guide
Helmet Sizing Guide
Use this guide to choose the correct GSB Helmet size. If you are between sizes, we recommend the smaller size, as liners break in slightly with use.
Measure around the fullest part of your head, just above the eyebrows and ears, keeping the tape level all the way around. Compare your measurement with the chart below.
| Size | Head Circumference (cm) | Head Circumference (in) |
|---|---|---|
| XS | 53 – 54 | 20 7/8" – 21 1/4" |
| S | 55 – 56 | 21 5/8" – 22" |
| M | 57 – 58 | 22 1/2" – 22 7/8" |
| L | 59 – 60 | 23 1/4" – 23 5/8" |
| XL | 61 – 62 | 24" – 24 3/8" |
| 2XL | 63 – 64 | 24 3/4" – 25 1/4" |