I bought this Magnet/Steel color pair of Keens to replace my old pair of the exact same shoes, ( but in solid black leather ), which I have been wearing comfortably at work for the past two years. I felt safe in buying the same size in these as my other shoes, since those fit me perfectly. This pair was noticeably tight while I was trying them on, but I mistakenly thought maybe I just needed to wear them in a bit, and that they would stretch in the tight areas after a few days at work. Very wrong assumption on my part, because not only did that not happen, but the initial discomfort turned to unbearable pain after a few 8 hour work days in these shoes. For me, the problem area is the top edge of the toe box, behind the big toe where it meets foot arch. My left foot has been in excruciating pain by the end of the day ( I had take them off and drive home shoeless tonight after work to escape the pain)! As I said before, this is my normal shoe size, and the same exact size I previously purchased these shoes in ( which fit perfectly ). I've worn them now for a week, so they probably aren't returnable. I'm now hesitant to choose this brand again. Beware of  possible sizing flaw in these shoes!