I really wanted these to fit right. Trial and error told me to buy my usual size and not what their chart shows. I was right But just for info, I also tried another Sketchers in a different style; same size, that did not work.  Too small. These are relaxed fit. Makes a difference. Even so The med that I did buy and will keep is fitted. Before I decided to keep them I made sure they were ok with a UnderArmor sport sock (slightly thin) and that was ok too.  Really hard to buy shoes on A, but still glad the return policy is good. Love the navy, it is a real true navy color, and the ribbon trim and the memory foam soles. Nice shoe. A little pricey but I hope it will last