Refuel on your next cold backpacking adventure in the ultralight, eco-friendly Hydrogen 30° Sleeping Bag, featuring a new sustainable ExpeDry water-repellent technology that increases down performance and reduces the drying time. With an optimal ISO-tested comfort right around freezing, the Hydrogen will give you the warmth you need 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 or camping with the car is in the plan, the Hydrogen will perform as a bivvy and a super-lofty trunk or rooftop snoozer.
- 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
- Fixed hood gives you full coverage