Field trousers, wool M-1951, US Army. I grew up in, arguably the coldest place in the lower 48 and became obsessed with staying warm. If you put these trousers over garden variety long johns and under 1000 cordura chaps, you will be warm and protected from wild rose bushes. If it is too cold for this, check into a mental hospital, you have a death wish.
Wear your Filson whippies to church, they're too expensive for the bush.
I googled those pants and found that they can be found for $20.00 and in virtually every size. Don't know how heavy they are but based on the photos they look thick. Nice find.
