"I got these in a 9. I can sometimes wear an 8.5, but my heel usually comes too close to the edge of a sandal so I go a half size bigger. Even with the 9, my heel was RIGHT to the edge of these. They seem narrow along the whole sandal, too. I don't have wide feet, but I couldn't see any of the bottom of the sandal while I had it on. It did have a little bit of cushion though, which you don't usually find in a flat sandal, so that was nice."