I first ordered my usual size 7. It was way too short - my heel was hanging over the back by nearly an inch!  I reordered in a size 8 and the length of the shoe is just right, though they feel a little sloppy width-wise now. I need these shoes for a wedding so will keep the 8s. Haven't had the opportunity to wear them yet, so can't speak to how long they'll feel comfortable, although walking around the house for a few minutes was a nice experience.