OS Sneaker Size Chart
OS Sneaker Fit Guidance
Runs true to size.
| US Men/Women | UK Men | Europe |
| M5 / W7 | M4 | 38 |
| M6 / W8 | M5 | 39 |
| M7 / W9 | M6 | 40 |
| M7.5 / W9.5 | M6.5 | 40.5 |
| M8 / W10 | M7 | 41 |
| M8.5 / W10.5 | M7.5 | 41.5 |
| M9 / W11 | M8 | 42 |
| M9.5 / W11.5 | M8.5 | 42.5 |
| M10 / W12 | M9 | 43 |
| M10.5 / W12.5 | M9.5 | 43.5 |
| M11 / W13 | M10 | 44 |
| M11.5 / W13.5 | M10.5 | 44.5 |
| M12 / W14 | M11 | 45 |
| M13 / W15 | M12 | 46 |