Grab this sleeping bag for the coldest nights on the trail. With a drawstring shoulder baffle to seal in warmth, this thing is rated for 0 degree temps—and it's even got a detachable hood so no body part is left behind. It's roomy, too, with a wide shoulder and a rectangular design that allows room for multiple sleeping positions. Sleep solo, or zip it up with another Cottonwood and you've got room for two.