Was looking for a comfy casual pair of slip on sandals that weren't the usual cheap foam flip flops. I wear an 8-8.5 in most sandals. This is my first pair of Crocs and I had heard they sometimes run large so I figured an 8 would be just right to a little roomy for me. However I found the size 8 to be too tight - they were threatening to give me blisters after wearing around the house for a half hour. I exchanged for a 9 and those are much better. The material has an annoying slightly "tacky" feel to it, which I suppose is typical of Crocs. I can live with it since they are otherwise quite comfortable, even fairly supportive. I wore them walking around a mall for about 3 hours today and my feet felt great.