I have the mens 9.5 and they were a bit big. I usually wear women's size 11, so they shouldn't be too big. Sizes range from 8.5 to 9.5 so I can't even try a smaller size because they don't wear them. The seam on the outside edge of my foot was in the perfect place to rub the bone in my foot a bit, but that might be because it needed to be bigger, not because the shoes were too big. Otherwise they were very comfortable, minimalist, light weight and very inexpensive shoes so I wish they would work.