"I have had multiple pairs of Clarks flats and they were oh so cute and comfortable. I loved the look of these heels and they seemed fine in the store when I tried them on. However, a day of wear and my feet were screaming at me. Even my one knee hurt. I believe part of the problem is that these shoes run about half a size big. I saw this mentioned on other shoe sites so it would have been helpful to know my usual size 9 would not work well. The wide version gave me enough room in the toe box, at least, but perhaps the bad fit just led to all kinds of problems. My toe was jammed up against the bottom of the shoe all day as well while walking. Not comfy, Clarks!"