My right foot is almost a size larger than my left so I bought a size larger and the left shoe fits fine but the right shoe is too narrow and too short and the material doesn't lend itself to being stretched. Also, my feet were sweaty and cold all day long with no room for socks to perhaps help that issue. I was looking for something closed in in the back as my feet get cold at work with the sling back style I have. This is the reason I don't like buying online for personal items. No matter what the reviews say, you still don't know till you've actually tried them on. Returning is really not so easy when you have to pack and ship.