I had been gifted different slippers and the old ones I have that fit well are wearing out. If they are too large they feel like clown feet and not solid on my feet. I am a pretty solid sz 13 and these are that. At first felt a little tight but breaking in nicely. The fur is thick so I'm sure it will compress more. This will be tight with heavy socks, but I have another pair for that. Only a week in so we'll see how they last.