I usually wear a size 7 but bought a size 7.5 and it fits perfectly. I got to wear this all summer before it broke, the wedge detached from the shoe. Sadly, i was outside and had to find a replacement quick. Very very comfortable. Could wear for hours without my foot hurting. When i first wore it, the back straps did hurt a bit but it wasn't a big deal. Love these wedges, wish they were more durable.