First, let's get one thing out of the way.  These shoes do run small. I use Asics GT's to run in and have used several models over a decade and I always take a 12.  Now for running 12 is perfect for me but when I use them to walk or stand around they are just a tad tight.  So I ordered these shoes in a 13D and have enough wiggle room for my feet.

I've noticed that comments about New Balance width are all over the map but I don't think that people understand that New Balance used a range of different lasts/footbeds across their models - even just for walking shoes.  For my feet I've found that a curved last with a wider forefoot and a small heel works best.  Now this is great if you can find what you want in a store and try it on.  However, online its very difficult to tell what the shoe will feel like. If you go to the New Balance website they's will tell you what last their shoes are using but even they aren't very good at telling you what all of their last codes actually mean which included this shoe.  So I've resorted to staring at pictures of shoe soles online trying to figure it out. Fortunately, I got it right. If you look at the sole of this shoe you can see that the heel area points more to the outside edge of the the ball of the foot rather than to the middle of the foot. Other shoes like Saucony's walker has a similar shape.

Now this is just perfect for me and my narrow heel which now sits firmly in the middle of the heel cup. I am also getting a very smooth stride from heel to toe.  Others, however, may find the shoe tight.  But if you get a wider shoe another part of the shoe won't fit you correctly. I had been using Rockport walkers because they were so hingly recommended but they have a straight last and a loose heel and never gave me a really relaxing feel when I walked.  For the record I used a 12 for a while and then ended up using an 11.5. But neither never really hugged my foot correctly. I've finally found what I wanted in this New Balance model but I've learned that you have to be very careful from model to model to be sure you are getting the right shoe for yourself.