I purchased 2 pairs of these shoes, one black and this blue one. A side by side comparison of both pairs of shoes showed a significant difference in construction. The blues ones had excess material between the last lace at the bottom leading to the toe area. I tried both pairs (men's 10) and the blacks felt and fit perfectly, while the blue ones felt as if I was standing on the side instead of squarely on the soles of the shoe. Not to mention, the blue ones looked hideous. I'm keeping the black pair, but returning  the blue ones. I don't plan on using them for running, but it's readily apparent that they are not very durable. I wanted a pair for the gym, and the other to pack in my overnight bag to minimize footprint of my carryon bag. Maybe I got a dud? Oh, they are not made for wide feet! I have narrow feet, and the black ones are a perfect fit.