I just got these after I read the reviews and decided to order my sneaker size, a 9.5. I normally wear a 9 in flats/dress shoes. With thick hiking socks they fit well with a little wiggle room. I could have ordered a 9 but keep in mind I have a fairly narrow foot. For those talking about the ankle cutting in, I did not find a problem as I was wearing thick socks, but I could see if you wore low-cut socks or no socks how it could cause discomfort. I love the low-profile of these boots. I wore them with jeans and they weren't bulky, very nice for a substantial waterproof shoe.