I had the Cumulus 12 shoes about a year ago in size 10.5W and they were massive (I had to give them away because I tried hard to like them by wearing them for a couple weeks).  This time around I ordered down to a 10W in the Cumulus 13.  They are on the small side.  I wore them 3 times for runs and each time my foot felt crowded and would get tingly or numb- even with super loose laces.  I pulled out the inserts and saw that they were super thick and took up excessive space. It looked like the inserts were an after thought which made these wides into a narrow average shoe.  I dropped in some thin inserts I happen to have.  The shoes actually feel like a normal wide width now!  I've worn them on a few runs and they feel absolutely great now... I don't even think about the comfort of my shoes when I'm running-- which is what I want.