Lots of those boots can be seen walking around here in montana. I have several pair of good old pack boots with the removable liners for cold work. The cheap rubber ones are mainly so I don't track chicken poop in the house.The wife and I use insulated Sorrell boots here. They're good down to something like -45. They keep my feet plenty warm when I'm out sitting on the tractor.
They used to be made in Canada, not sure where they're made now.