Refuel on your next below-freezing backpacking adventure in the ultralight gas bags, featuring ExpeDry technology that increases performance and reduces the drying time of your down bag. With an optimal ISO-tested comfort well below freezing, the Helium 15 Sleeping Bag 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. Features: RDS certified 800-fill-power goose down with quick-dry ExpeDRY treatment 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: -9C Bag Temperature Fahrenheit: 15F Tested Comfort: 27F/-3C Tested Limit: 16F/-9C Footbox Size: 39.0 in, 99 cm Hip Girth: 55.9 in, 142 cm Includes Compression Stuff Sack: No Includes Storage Sack: Yes Includes Stuff Sack: Yes Insulation Material: Goose Down Insulation Type: Goose Down Shoulder Girth: 61 in, 155 cm Stash Pocket: Yes Stuff Sack Size: 14.2 x 7.1 in, 36 x 18 cm Style Number: M14404 Product Weight: 2 lbs 2.7 oz,984.0 g Zipper Location: Left Zip 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 Marmot Men's Helium 15 Left Zipper Sleeping Bag - Arctic Navy/Dark Azure