Monty & Blumer Size Guide
| Insole length (CM) | Insole length (Inch) | EUR size | UK size | US size |
| 13 | 5 1/8 | 20 | 4.5 | 5 |
| 13.5 | 5 3/8 | 21 | 5.5 | 6 |
| 14 | 5 1/2 | 22 | 6 | 6.5 |
| 14.7 | 5 3/4 | 23 | 7 | 7.5 |
| 15.4 | 6 1/8 | 24 | 8 | 8.5 |
| 16 | 6 1/4 | 25 | 8.5 | 9 |
| 16.5 | 6 1/2 | 26 | 9 | 9.5 |
| 17.3 | 6 3/4 | 27 | 10 | 10.5 |
| 17.8 | 7 | 28 | 11 | 11.5 |
| 18.6 | 7 3/8 | 29 | 11.5 | 12 |
| 19 | 7 1/2 | 30 | 12 | 12.5 |
| 19.5 | 7 5/8 | 31 | 13 | 13.5 |
| 20.4 | 8 | 32 | 13.5 | 1 |
| 20.9 | 8 1/4 | 33 | 1 | 1.5 |
| 21.5 | 8 1/2 | 34 | 2 | 2.5 |
