It is so hard to get a good fit with boots, but these are perfection! I normally a size 8 in crocs so that is what I ordered, and the fit is excellent. They are a little tough to get on and off because they do tighten up around the ankle, but without that snugness, they wouldn't sit right on the ankle and top of the food. These weigh almost nothing, and I can wear them ALL DAY comfortably