I ordered these shoes 1/2 size smaller than I usually buy running shoes/trainers, because they came in a 9 1/2 wide width, and they fit perfectly. They are the lightest most comfortable shoes I have ever worn, with plenty of room in the toe area and no inside seams to chafe my feet when I'm walking/body-pump class etc. I think they'll be perfect in the brutal Texas summer, also, since the materials are so lightweight. The bright orange/tomato-red accents are pretty against the light grey.