I bought these boots for a winter trip to NYC and for general use in Northern Minnesota where I live.  They are AWESOME!  Thanks to a couple run-ins with frostbite and a thyroid problem, it is very hard for me to keep my feet warm.  These are the only boots I've ever owned that I can put on when my feet are cold, go outside, and my feet will warm up in them.  Even when covered in snow, the cold doesn't seep in much.  The liner is super cozy and conforms well to the foot without feeling restrictive.  My feet will occasionally sweat in them (which rarely happens in any other shoe since my feet are always cold), but they dry out quickly. The ankle was a little stiff when I first purchased it, but daily use has worn it in.  They are water repellent, but not waterproof--I can walk through snow, no problem, but puddles are hit or miss.  I did spray them with two coats of a waterproofing spray, which helps a lot.  My calf is about 15 inches around and I can easily fit a pair of jeans inside of them and they still have a little bit of room, so my circulation isn't restricted. I normally wear a shoe size 7-7.5, but I got these in an 8 and I'm glad I did--any smaller and I wouldn't have been able to wear a winter sock with them. I'm seriously considering buying a second pair and have recommended them to all my friends.