I’ve realized that most hiking boots aren’t insulated. This is because if they are insulted, they don’t breathe as well. Hiking boots are really great if they keep you warm when it’s cold and cool when it’s hot.
Since I am heading into a real winter climate, I was checking out different options of liners to have some insulation on my feet. The best option would be something that includes a Polartec fleece fabric or a Thinsulate fabric. Duratherm from Gore works well too. Most manufacturers will have their own insulating materials.