On well bathed skin (this is one of the most important things many overlook) Polypropylene is worn as your first layer and a well made (military) "bear liner" (so nicknamed due to it being brown) or you may try polar fleas, breathable second layer and finally a Gortex outer garments, also breathable. Loose and in layers is the rule in winter outdoor clothing, also short work periods, plenty of water and keep you head covered. Brigade Quarter Masters has Polypropylene long underwear and a lot of other gear that is useful for all occasions: $16.99 for tops and $16.99 for Drawers sizes from small to XXXL.
Offered by Lou.