Refuel on your next below-freezing backpacking adventure in the ultralight, eco-friendly Lithium 0° Sleeping Bag, featuring a new sustainable ExpeDry water-repellent technology that increases performance and reduces the drying time of your down bag. With an optimal ISO-tested comfort that teeters above or below zero, the Lithium packs serious warmth in a super-packable 800-fill-power down bag designed to easily stuff into any overnight pack. A thru-hiking favorite, the new gas bags provide lightweight warmth that's light on the Earth—perfect when you're looking to maximize miles or speed in the mountains and minimize weight and space in your pack. If going tent-less is in the plan, you can count on the quick-drying ExpeDry to perform as a bivvy sack on cold, wet, or snowy ground or ledges. Features Ultralight and packable certified 800-fill-power goose down with eco-friendly ExpeDRY water-repellent finish that increases performance and durability with reduced drying time Anti-snag slider on main zipper and fold-down second zipper provide added ventilation and easy access in and out of sleeping bag Anatomically designed footbox with wrap-around construction increases warmth Smooth, curved baffles reduce down from shifting, increasing durability and reducing inconsistent heating inside bag ISO-tested for reliable temperature and comfort rating Stuff and storage sack included Specifications Bag Temperature Celcius: -18°CTested Comfort: 12˚F/-11˚CTested Limit: -2˚F/-19˚CShoulder Girth: 61 in, 155 cmStuff Sack Size: 16.1 x 7.5 in, 41 x 19 cmStyle Number: M14406Product Weight: 3 lbs 0.9 oz,1,387.0 gZipper Location: Left Zip