I bought these as I needed a slightly "dressier" sandal than my chacos. While these are comfy, they provide very little support, and the fact that they mold so easily was a downside for me. I have fallen arches, and my feet just squished the arch support in these shoes, they did nothing for supporting my foot. They're fairly comfy, but again, I don't recommend them if you're looking for a sandal with good support.

Like others, I did find I needed to "round up." I usually wear a 9 or 9 1/2, and the 10 fits me perfectly.