I wear a size 10 (used to be an 11 until shoes started running large for the most part), narrow to medium width due to slight bunions. I also have a Dr Comfort custom orthotic insert that works in most sandals with a back, which is the reason this sandal appealed to me. The vamp is a little too wide and my foot slides from side to side. Had our daughter try them, as she wears a 10 wide, also with an orthotic, and they were too narrow for her. All in all, a medium width sandal. They were very nicely crafted with a sturdy sole and a lot of cushioning. The insole was leather, as well (which one does not always find, even in a higher priced shoe).  It would have been nice if they had worked out for us. I gave the sandal four stars due to no arch support, but with our inserts, that would not have been an issue.