| US Size |
CM (Length) |
WHY&CO Size |
| 8 |
25.4 |
37 |
| 8.5 |
26.0 |
38 |
| 9 |
26.6 |
39 |
| 9.5 |
27.0 |
40 |
| 10 |
27.3 |
41 |
| 10.5 |
27.7 |
42 |
| 11 |
28.1 |
43 |
| 11.5 |
28.5 |
44 |
| 12 |
28.9 |
45 |
Note on Width: WHY&CO follows a D width (standard men's medium) rather than narrow (C). If your foot length-to-width ratio is larger (wide feet), we recommend sizing up by 2 sizes per width increment.
