I had read these shoes ran big so I originally bought these in an 8 (my shoe size is 8.5) but they were huge. The 7 is a better fit. I had to purchase these after a running injury left me with a fallen arch in one foot and the podiatrist said no more flat sandals for me. These sandals offer the support I now need while being somewhat stylish. Honestly, the small coin/disc on the thong strap has caused discomfort for my second toe so I don't recommend these for all day or even moderate walking. I tried removing the disc but it's really stuck on there. How unfortunate.