They fit like street boots, I am size 7 1/2 and got the 39 and they fit well. Not super snug like custom talls, I can slip them on, which is what I like for working winter boots. I have a 15 inch calf, and they fit just fine. I just got them, and they seem quite sturdy and nicely made and feel very warm right when you put them on. I would recommend to buy these, good value, attractive and strong.