I have another pair of Olukai flip flops and they seem to have a little more room. I actually returned the normal size I wear and ordered the next whole size up. The new size 13 sandals fit well. I saw other reviews that said they were a snug fit. There are no half sizes so order up if you fall at a half size. Since their is so much leather on these flips flops it takes some time to break in the footbed. With that said, these are very nice flip flops and I am happy so far with them.