I wear anywhere from a 6 to a 7 1/2 got the 6 1/2 and they fit perfect. I ordered these to replace my favorite old flip flops from Reef, I think they were called "Butter", it was a long time ago and they do not appear t be making those anymore. These are an awesome replacement really comfy. My only complaint is that my cat likes to claw them... but that is my fault for never having her de-clawed.
I will be purchasing more of these in different colors.