I bought a size 8-9 because I wasn't sure of the sizing. I usually wear a 7 to 7.5. the slippers are a bit big, so I should have gotten my size. As the photo shows, they fit loose. A bit looser than I prefer as my feet are not thick. also the foam is not as good as Dearform, but not horrible either. it feels pretty good. The only things that I don't like are the top fuzzy edge is straight and it rubs my ankle, and they make a quiet plastic crinkle sound when they flex as you walk. I have very acute hearing, so most people probably wouldn't even hear it. They aren't bad slippers overall, but they aren't great either. They'll do for now.