I bought the womens size 8 1/2 and thats the shoe size I wear. The fit fine with light weight and medium socks. If you need to wear a heavy sock in the cold states I would go up a half size. They are very comfortable. I am on my feet a lot and have no issues. I put a shoe insert in mine for more cushion. Boot is a little snug around ankle and sides but seems to loosen up over time. Did not have to break them in they were comfy from the start.