We all know that the key to keeping your feet warm when it comes to boots is combining them with the right socks. As long as your boots are of a decent standard you should be okay – that’s if you’re not sticking them out of the bivvy to get snowed on in minus 6ºC conditions, obviously. The critical feature of good winter boots then is that they can keep out moisture – a leaking boot will give you cold toes quicker than you can say trench foot.