JIIJ Size Guide
Fitting suggestion: most of the sizes fit large. Take a size down. To make sure, measure out your feet in centimeters and take the right size listed in the Size Guide below.
| EU | UK | US (W) | US (M) | CM |
| 35 | 2.5 | 5 | 3.5 | 23.5 |
| 36 | 3.5 | 6 | 4.5 | 24 |
| 37 | 4.5 | 7 | 5.5 | 24.5 |
| 38 | 5 | 8 | 6.5 | 25 |
| 39 | 5.5 | 9 | 7.5 | 26 |
| 40 | 7 | 10 | 8.5 | 26.5 |
| 41 | 7.5 | 11 | 9.5 | 27.5 |
| 42 | 8 | 12 | 10.5 | 28 |
| 43 | 9 | 13 | 11.5 | 28.5 |
| 44 | 9.5 | 14 | 12.5 | 29.5 |
| 45 | 10.5 | 15 | 13.5 | 30 |
| 46 | 11.5 | 16 | 14.5 | 31 |