Okay so I truly wear an 11.5W womens obviously thats a freak size to find so I shoot for 12s which I hate because then my feet look even bigger (even though Im 60). Crocs run big so I buy 11s in those and they fit great. I read some reviews of these with people complaining their feet swam in these so I was curious....sure enough they fit incredible and they are soooooo comfortable like super soft squishy memory foam sole I love them. I bought them to putt around the house and to the lake on our boat. So I would say they do run wide not necessarily length but most definitely width. If you run narrow do not purchase them. If you're a bigger 11 you will love them!