text: I'm am an 11.5 US and got the 11.5D(M) this shoe fit really snug. The width was a little narrow and the arch support was about an inch too behind from where my arch is, as if it's too close to my heel. I would have gotten a wide, but figured it wouldn't make much of a difference, it did. Well, a lesson on not to jump the gun on getting stuff on Prime Day!