Refuel on your next below-freezing backpacking adventure in the ultralight, eco-friendly Helium 15° 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 well below freezing, the Helium will keep you toasty from head to toe 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.

• 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
• Pertex Quantum outer fabric, designed to trap still air and improve the efficiency of insulation. A durable water-repellent (DWR) finish sheds light rain and snow to provide additional weather protection.
• 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

Bag Temperature Celcius: -9°C
Bag Temperature Fahrenheit: 15°F
Product Care: Machine Wash Cold, Use Liquid Detergent, Gentle Cycle, Do Not Use Powdered Detergent, Tumble Dry Low, Do Not Iron, Do Not Bleach, Do Not Dry Clean, Do Not Use Fabric Softener, Rinse Twice, Do Not Store Wet
Tested Comfort: 27˚F/-3˚C
Tested Limit: 16˚F/-9˚C
Footbox Size: 40.9 in, 104 cm
Hip Girth: 57.9 in, 147 cm
Includes Compression Stuff Sack: NO
Includes Storage Sack: YES
Includes Stuff Sack: YES
Insulation Material: Goose Down
Insulation Type: Goose Down
Shoulder Girth: 63 in, 160 cm
Stuff Sack Size: 14.2 x 7.1 in, 36 x 18 cm
Style Number: M14405
Product Weight: 1,077.0 g
Zipper Location: Left Zip