Essential Runner Size Guide
Unit: MM
| Size | Insole Length | UK | US | EU |
| 6 | 262 | 6 | 7 | 40 |
| 6.5 | 265.7 | 6.5 | 7.5 | 40.5 |
| 7 | 266.7 | 7 | 8 | 41 |
| 7.5 | 272.3 | 7.5 | 8.5 | 41.5 |
| 8 | 273.3 | 8 | 9 | 42 |
| 8.5 | 279 | 8.5 | 9.5 | 42.5 |
| 9 | 280 | 9 | 10 | 43 |
| 9.5 | 285.7 | 9.5 | 10.5 | 43.5 |
| 10 | 286.7 | 10 | 11 | 44 |
| 10.5 | 292.3 | 10.5 | 11.5 | 44.5 |
| 11 | 293.3 | 11 | 12 | 45 |
| 11.5 | 299 | 11.5 | 12.5 | 45.5 |
| 12 | 300 | 12 | 13 | 46 |