>>1194763Sleeping bags are terrible for more than 2 or 3 days unless you can unzip them all the way and dry them facing the fire in the next morning. If you don't, they get steadily moister and moister on the inside. Regardless, they're harder to throw off in the middle of the night than loose blankets, and the latter will not trap foul humors or miasmas close to the body during sleep.
