These fins easily fit people with small feet and/or narrow feet. So, even if you have small feet and/or narrow feet and/or a low arch, the fins will still fit you.
The fin doesn’t enclose your foot at all. It straps just above your ankle. The lower part of the fin lies gently along the top of your foot. It doesn’t attach to your foot.
They still fit if you have unusually shaped feet. The size and shape of your feet doesn’t affect how they fit. You can wear them whatever your foot size or shape. Foot amputees can wear them too.
With particularly small feet the fins might stick out a little more from your toes. This doesn’t really affect your swimming. But it can make walking a bit harder (although still better than with foot flippers!). If it bothers you, then you can just fit the fins a bit higher up your legs.
See related faqs about why these fins fit narrow calves and why these fins fit short people with little legs.
See all faqs about the adjustable fit of these fins.