text: The cold snaps and dealing with it., page 1
  posted on Dec, 31 2013 @ 11:42 AM
  Down is a great insulator, but it's worthless when it gets wet. Chances are they'll be snow on the ground if it's sub zero outside. The chances of a down sleeping bag getting wet are exponentially higher. Down also clumps up and is just plain nasty to work with when wet.
  I went out and bought the warmest synthetic bag I could find. I ended up with a North Face Dark Star, rated to -40F/-40C. So far it's much to warm to use even when it gets down to 0F.
  I look to the people climbing mountains like Everest and Mt. McKinley. The harshest conditions in the world can be found up there. If it's good enough for them, it'll certainly keep me alive at sea level.
  posted on Dec, 31 2013 @ 04:58 PM
  Who said anything about "down"? I said WOOL and LINEN.....not down feathers. Also, if you plan to sleep on the ground, I suggest making a bed of something first (pine boughs, straw, dead grasses, etc...) to sleep atop to keep off the ground.
  As for Mt climbing, yeah, but they are also acclimated to the weather there before they make the climb. What if that fancy synthetic bag gets ripped? What if it melts? Then what? The art of survival is keyed upon adaptation and innovation with what is around. Having that knowledge is worth more IMO than all the fancy tech in the world.