Im a size 6 normally. Occasionally I get a 6.5 for close toed shoes especially if they're for summer because my feet tend to swell, but these were too small. My big toe was turning purple even after loosening all the straps. My heel came right to the back of the shoe, if not over it a tiny bit, and there was only maybe a half inch of shoe in front of my toe. Returning these for a 7! Once I get the right size, I know these will be super comfortable!