I usually wear a 7-7. Throwing them out and buying some UGGs, lesson learned. AVOID! *Updated 25 Sept 2020*Background & TestingSo I bought 2 Evos (black and grey) and noticed both have the hissing sound when I plug it in. These hurt my feet and eventually fell apart. I wanted something that would hold up my bike for storage so I would not scratch it up and this device works great. Only if you apply all the information you?ve learned and practice with the right mindset, you?ll get good. They live in CA. As with all Fit Flops they are made well. I really like this case, it looks unusual and of high quality.