I have wide feet and ordered a 10WW; very glad I did because I think they run on the more narrow side and I think a regular 10W would have heen a little bit snug. The 10WW feels extremely comfortable and doesn't hurt my toes. However, it runs a little bit too long and it feels like a 101/2 size shoe but it's not anything major. Also, the padding in the shoe is very comfy and they look simple but professional for work. I will definitely order this shoe again.