I am a big guy that typically wears 13 4E in NB shoes. I followed the recommendation of others in there reviews and ordered a pair of 14 2E in an attempt to get the extra width I need. These shoes have the NL-1 last that claims it runs wide in the forefoot. It must because these shoes feel like I'm  stepping into a comfortable pair of slippers. I wear them indoors only for P90X and working the heavy bag. Love them so far.