Measure the circumference of your wrist.
| Size | Range (cm) | Range (Inches) |
| Small | 15cm - 17cm | 5.9" - 6.7" |
| Medium | 17cm - 19cm | 6.7" - 7.5" |
| Large | 19cm - 21cm | 7.5" - 8.3" |
| XL | 21cm - 23cm | 8.3" - 9.0" |
| XXL | 23cm - 25cm | 9.0" - 9.8" |
If you are between sizes it is advisable to go for the larger size.