Have never had trouble in
"Have never had trouble in past but this model hurts my heels and sofar I can’t wear them outside. I bought two pairs but only sent back one pair as I had worn the second pair a little."

Allbirds fit true to size for most customers. If you have wide feet or are between sizes, we suggest you size up for all styles.
Did you know that our shoes are actually unisex? You can easily cross over to find shoes in your size.
Here’s how it works:
If you wear a women’s size 11, try a men’s size 8 or 9.
If you wear a men’s size 7, try a women’s size 10 or 11.
| US | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
|---|---|---|---|---|---|---|---|
| UK | 2 - 2.5 | 3 - 3.5 | 4-4.5 | 5 - 5.5 | 6 - 6.5 | 7 - 7.5 | 8 - 8.5 |
| EU | 35 | 36 | 37 | 38 | 39 | 40 | 41 |
| cm | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| US | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
|---|---|---|---|---|---|---|---|
| UK | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| EU | 41 | 42 | 43 | 44 | 45 | 46 | 47 |
| cm | 26 | 27 | 28 | 29 | 30 | 31 | 32 |
We offer Fast Shipping & Easy Returns