Fortunately a friend warned me on these shoes. I typically wear a 15 or 16 but I ordered a 14 in these shoes due to his recommendation. The shoes came in and were a little tight. I rolled my eyes and prepared to send them back for a 15. My friend stopped me and told me to simply walk in them to break them in. Wow... I almost think I could get a 13.5 but that isn't a real size so I had to put in a heel cup to prevent heel lift! These are very crazy shoes with regards to sizing so order small and then expect a couple I days of continuous walking to break in to a very comfortable shoe! Hope this helps!