Beware, the female sizes run small. I wear a 8.5 in closed toe and closed heel shoes. I prefer a 9 for flip flops because I don't want any part of my foot to appear as if it will/does hang over. The 9 was too small and my heel looked as if it was handing off when I was standing.  Nonetheless, the design is nice. I reordered in a size 10 and it fits just right. It's so odd to me. I've owned other Crocs brand shoes and they have never been a size 10.