When out in the cold, you can either go for thicker wool socks or you can double up. Either way, I always overpack socks and suggest bringing 1.5 more socks than the number of days you plan to be there, at least. So if you’re going for a week, pack 11 pairs of socks. If you don’t use them all, just keep them folded up and toss right back into your sock drawer when unpacking.