Ok I know it sounds alittle odd but while in the service I was roommates with a guy from W.V. who said that a pair of nylons under your thermals keeps you real toasty. I never tried it but having a conversation with another hunter, he mentioned that you dont want any cotton touching your skin. and that I should be looking into some polypropalyn underware. well, there costly but it made me remember the nylon thing. so I was curious if anyone has or knows of someone who has tried it. Im sure you might hear a few comments back at the lodge.