I have a pair of lightly-insulated hiking boots. When it's really cold, it's those and wool socks. Well, actually it's wool socks 365*. Generally I find that if I keep my core warm enough my fingers and toes aren't a problem, so I layer up in multiple thin layers just a bit more than is really necessary and peel if I really need to.
* In 1973, buying boots in a serious boot store I got chewed out by the salesman for having cotton socks. It was summer, and he said if I tried wool just once that I would not go back. I tried, and I have not gone back. Cool in summer, warm in winter, no more heel burns and callus. Not at all what I expected, regarding summer.
Last edited by mdarnton; 02-12-21 at 10:46 AM.