They are SO comfortable. I bought a 9, which is what I normally wear, and they fit well with thin socks. They can be a little snug around the top if I wear normal socks, so I have to wear thin ones. I don't ever wear shoes without socks. I've had them for a few weeks and wear them often, the backs hasn't worn out yet, but I'm watching it like a few other reviews say.  I am a little disappointed at how the black started to blemish and fade just on the toes, see pictures. but it's not too noticeable. I have a white dog, her hair is much more noticeable. :)