These flip flips were a great and comfortable purchase. Other reviewers mentioned they thought you should buy a size above your true size. I actually think these are true to size. My shoes generally are US8.5 but I can wear anything from US8 - US9.5 depending on the shoes. I have a pair of teva sandals and have them in US8.5, I used this as my guide.

When they arrived I actually thought that perhaps they were too big for me by a whole size. But I've since decided they are true to size and an US8 most likely would have meant my toes would hang over the edge. If I ever get to try a pair I will update this and let people know.