Alot of good info here.

When my feet get cold I'm done - finished - outa there!
My boots have liners which I replace every 3rd year as the lining material gets compressed and is no longer effective. I buy as many foot and hand warmers as I can get a hold of prior to season. Those little warmers in boots and tucked in around neck or breast pockets will save the day when temp gets into teens. I wear a heavy stocking/cotton pull over cap and scarf. I pull all this around neck and over ears(alot of heat loss in those areas). The guys I hunt with laugh at hat and scarf garb but TS - I can out last all of them on a bitter day!

I always layer my clothing,thinnest material against skin and work out to heaviest. 2-3 pairs of socks and 3-4 layers of upper body clothing. It all makes a differance between leaving a stand after couple hours or hangin in there until something happens - Bang - In the Frezzer