I followed the advice of some other reviewers, and order down a size. I normally wear a size 8, so I would have liked to order a 7.5 but they don't carry half sizes. I took the risk and ordered a size 7, hoping they would stretch out. When I first put them on they were pretty tight, but they just needed to be broken in a little. It doesn't provide much wiggle room, but I like a tight fit. They are very narrow so if someone with wider feet were to order down a size like me, it probably wouldn't work. So far I've worn these almost everyday for two weeks because they are just so comfy and they're perfect for cold weather.