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Need Help Finding Your Size?
Get a size recommendation based on the shoes you already own. No guessing. No measuring. Just a better fit.
Does It Run Large or Small?
Allbirds Runner Protect runs 1.5 times larger than other Allbirds shoes and requires a custom size chart, which you find below.
Official Allbirds Size Chart
Allbirds - Half Size - Male
Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.
Fit Type: Runs large
| Shoe Length (mm) | EU |
|---|---|
| 253 | 41 |
| 258 | 41.5 |
| 263 | 42 |
| 268 | 42.5 |
| 273 | 43 |
| 278 | 43.5 |
| 283 | 44 |
| 288 | 44.5 |
| 293 | 45 |
| 298 | 45.5 |
| 303 | 46 |
| 308 | 46.5 |
| 313 | 47 |
Based On: Allbirds :: Official :: Half Size :: Male
Last updated: 2025-09-05 06:35:39