From Teva's online size chart, I wear a 7.5. So, I ordered a 7.5 in these sandals on Amazon. They were huge. I ended up sizing down to a 6.5, I think a 7 probably would've worked, but 6.5 fits like a glove. I have skinny, narrow feet and I have the hardest time finding sandals that will stay on my feet. These are a winner!!  All of the straps are adjustable and I can get these to fit like a glove. Be sure to get the right size, because the form of the foot bed will not be comfortable if it hits your foot in the wrong spots. The sole has a lot of cushion, the straps have padding, and the bottom has a lot of grip.