This is your winter cocoon—it's a best-of-both-worlds hammock and sleeping bag, made with chilly temps and deep sleep in mind. Filled with toasty synthetic down, it hangs up easy like a hammock and zips up cozily like a sleeping bag, allowing you to enjoy the comfort of a hammock year-round. And it packs compactly thanks to the included compression and storage sacks, so you can bring it along on any sized trip.