Zerosole Insole Size
| US | UK | EU |
| 5 | 4 | 37 |
| 5.5 | 4.5 | 37.5 |
| 6 | 5 | 38 |
| 6.5 | 5.5 | 39 |
| 7 | 6 | 39.5 |
| 7.5 | 6.5 | 40 |
| 8 | 7 | 41 |
| 8.5 | 8 | 42 |
| 9.5 | 8.5 | 42.5 |
| 10 | 9 | 43 |
| 10.5 | 9.5 | 44 |
| 11 | 10 | 44.5 |
| 11.5 | 11 | 45 |
| 12 | 14 | 46 |
| US | UK | EU |
| 5 | 4 | 37 |
| 5.5 | 4.5 | 37.5 |
| 6 | 5 | 38 |
| 6.5 | 5.5 | 39 |
| 7 | 6 | 39.5 |
| 7.5 | 6.5 | 40 |
| 8 | 7 | 41 |
| 8.5 | 8 | 42 |
| 9.5 | 8.5 | 42.5 |
| 10 | 9 | 43 |
| 10.5 | 9.5 | 44 |
| 11 | 10 | 44.5 |
| 11.5 | 11 | 45 |
| 12 | 14 | 46 |
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