HEYDUDE Adult Footwear Size Chart
| Heel-Toe Measurement | 8 3/8" | 8 5/8" | 9" | 9 3/8" | 9 5/8" | 10" | 10 3/8" | 10 5/8" | 11" | 11 3/8" | 11 5/8" | 12 | 12 3/8" | 12 5/8" | 13 | 13 5/8" |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| US - Womens | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | -- | -- | -- | -- | -- | -- | -- |
| EU - Womens | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | -- | -- | -- | -- | -- | -- | -- |
| US - Mens | -- | -- | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| EU - Mens | -- | -- | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
In between sizes? For tight fit, go one size down. For loose fit, go one size up.