fwiw - this time of year, I break out the sock liners, basically a very thin sock to be worn under other socks. so I start with those, then address the daily weather with other measures, meaning what outer sock to wear, what shoe or boot to wear & whether or not a chem pack toe or hand warmer is needed. not to go off on too many tangents, let my contribution be the "sock liner" ... of the various that I use, these are my favorite & I have several pair
Fox River X-Static Liner Socks