My biggest worry when ordering was whether they would be true to size or run a bit small based on some of the other reviews I had read. I was glad to find that they fit my size 12 feet perfectly and I would say they are true to size. They are also very light and although the upper material does seem a bit fragile, I plan on these being my indoor workout shoes for the next 6-12 months and I think they will hold up well in that role. Despite the zig zag pattern it doesn't create any feeling on the bottom of my foot that there is presuure only where the zig zags attach to the sole. Overall very light weight, comfortable, good looking (at least I think so and I got the orange and silver pair), and true to size.