BUNBAS Size Guide.
| EU | Length (cm) | US | UK | JP |
| 35 | 22.7 | 3.5 | 3 | 22.5 |
| 36 | 23.4 | 4 | 3.5 | 23 |
| 37 | 23.7 | 5 | 4 | 23.5 |
| 38 | 24 | 6 | 5 | 24 |
| 39 | 25 | 7 | 6 | 25 |
| 40 | 26 | 7.5 | 6.5 | 25.5 |
| 41 | 26.7 | 8 | 7 | 26 |
| 42 | 27.3 | 8.5 | 7.5 | 26.5 |
| 43 | 28 | 9.5 | 8.5 | 27.5 |
| 44 | 28.7 | 10 | 9 | 28 |
| 45 | 29.3 | 11 | 10 | 29 |
| 46 | 30 | 12 | 11 | 30 |
| 47 | 30.6 | 12.5 | 11.5 | 30.5 |
| 48 | 31.3 | 13 | 12 | 31 |