I have a wide toe box, but a narrow heel. Wide 4E widths in New Balance or Asics fit me fine in the toe box and heel. The Spira in a 4E was a tad narrow in the toes and my heel popped up and down. Their wide width would be great for those with big, huge, fat wide feet all around, or those with wide heels. I tried Spiras a few years ago, and could feel the spring in my step, but NOT with these. And the cheap Chinese craftsmanship was very apparent--I had to cut the top holes of the shoes all the way through myself with scissor tips to make the laces go through. These classics were a real let-down and have promptly been returned.