I always buy New Balance size 11D.  In trying on these sized NB shoes at a shoe store, I found them to be too small.  I then bought a size 11 1/2 and a E width.  They seemed no more than snug in the shoe store, but after the first day, I found them to be pinching my toes on both feet, creating soreness and redness.  I brought my complaint and details to the attention of New Balance and they were of no help to me.  I'm left with a pair of new shoes that I can't wear but for an hour or two.