The circumference of the ankle (A), at the narrowest point. This is the point of maximum pressure
| Size | Inch | CM |
|---|---|---|
| S | 7.48 - 8.27 | 19-21 |
| M | 7.87 - 8.66 | 20-22 |
| L | 9 - 9.84 | 23-25 |
| XL | 9.84 - 11 | 25-28 |
| XXL | 11.4 - 12.6 | 29-32 |
Shoes sizes
| Size | USA | EU |
|---|---|---|
| S | 4 ½ - 6 | 35-37 |
| M | 6 ½ - 7 ½ | 38-40 |
| L | 8 - 9 ½ | 41-43 |
| XL | 10 - 12 | 44-46 |
| XXL | 12 ½ - 15 ½ | 47-49 |