Reddit reviews Baffin Men's Hunter PT Forest Black Hunting Boot,Forest/Black,10 M US

https://www.amazon.com/Baffin-Hunter-Forest-Black-Hunting/dp/B004YGS0C6 I have these, they're probably ok at -25c if you're wearing heavy socks and moving, if you're sitting still you will be miserable. I've had them for almost 2 years and they're starting to show some signs of wear, but I'm hard on shoes in general and boots doubly so, getting more than a year out of something like this is a bit of a miracle. They do run large and aren't very tight fitting, I wouldn't want to walk more than a couple miles in them, and sock choice is critical as about half of my socks will fall off inside of these boots.

I recommend a good pair of boots as well as dressing in layers with under armor or long underwear. I like these a lot.
Also, good socks, gloves, and a winter hat that covers your ears.