I always buy cold weather boots 2-3 sizes too big so I can wear heavy wool socks while deer hunting and ice fishing. I also put a foam insole in the bottom for additional insulation. Tight boots will make your feet get cold fast. They seemed a little on the small side. Nonetheless they fit good enough. They are definitely not -40 degree boots but I live in N. Michigan, not the North Pole, so they're fine. My feet got chilly after sitting for a couple of hours on a 34 degree day. These are felt pack boots, not Thinsulate packs (which are warmer) but for the price I can't complain. I had a pair of Ranger cold weather boots with Thinsulate packs and they were awesome, even on the lake when it was 0 degrees but they dry-rotted in less than a year. They were also twice as much money. I gave them a 4 star rating because they're not -40 degree boots as advertised. I supposed if you were hiking your feet wouldn't freeze solid, but they're not for sitting still at -40 for any length of time but they are a good value for the price.