I have ordered fit flops before and as I am usually size 8 1/2 but with a very narrow foot, I ordered size 8. The last ones I had, there was a little room at the end of my heel. These are an exact fit. I bought these because they are adjustable and I hated when there would be room between my foot and the strap on top. I felt like I flip-flopped everywhere and was always trying to keep my foot in the shoe. These are amazing in that aspect. My foot fits in perfectly and I am not clenching my toes to make sure that my foot stays in them. The only drawback is the piece between the toes which takes a while to get used to and break them in. The first few days were a little uncomfortable but after that - amazing!