6D Helmets Size Guide
Please note that the following sizing chart is intended to be used as a guide only. We highly recommend trying on the riding gear before purchase to ensure the best fit.
ATR-1
ATR-2
ATR-2Y
ATR-3
ATS-1R
| Size | Head Circumference (cm) | Cheek Pads (mm) |
| XS | 53-54 | 55 |
| SM | 55-56 | 50 |
| MD | 57-58 | 45 |
| LG | 58-59 | 40 |
| XL | 60-61 | 40 |
| 2XL | 62-63 | 35 |
| Size | Head Circumference (cm) | Cheek Pads (mm) |
| XS | 53-54 | 50 |
| SM | 55-56 | 45 |
| MD | 57-58 | 40 |
| LG | 58-59 | 35 |
| XL | 60-61 | 30 |
| 2XL | 62-63 | 20 |
| Size | Head Circumference (cm) | Cheek Pads (mm) |
| SM | 49-50 | 50 |
| MD | 50-51 | 45 |
| LG | 51-52 | 40 |
| XL | 52-53 | 35 |
| Size | Head Circumference (cm) | Cheek Pads (mm) |
| XS | 53-54 | 55 |
| SM | 55-56 | 50 |
| MD | 57-58 | 45 |
| LG | 58-59 | 40 |
| XL | 60-61 | 40 |
| 2XL | 62-63 | 35 |
| Size | Head Circumference (cm) | Cheek Pads (mm) |
| XS | 53-54 | 50 |
| SM | 55-56 | 45 |
| MD | 57-58 | 40 |
| LG | 58-59 | 35 |
| XL | 60-61 | 30 |
| 2XL | 62-63 | 20 |
