Finding Your Perfect Fit
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 except our Tree Runner (size down for those).
Our Wool material adjusts to foot shape, while Tree is more elastic and retains its shape, so fit may vary by style or personal preference. Still debating? No worries—our hassle-free 30-day return policy allows you to try us on for size and find the perfect pair.
Men's sizes are 1.5 smaller than women's - for example, if you are a women's 10.5, you can purchase a men's 9.