Lighter than an imaginary cloud (and far warmer), Marmot's Helium 15-Degree Down Sleeping Bag is the perfect bag for long, chilly trips when added ounces can mean serious slowdowns. The Helium is part of Marmot's Ultralight series, which isn't quite as airy as the barely-there Ion, but it's a lot more affordable and still a killer three-season bag for backpacking, camping, and alpine missions. Pertex Microlight and nylon ripstop fabrics keep the superlight 800-fill goose down from escaping, and Marmot's Smooth-Curved baffle construction prevents the insulation from shifting around, so you're not fighting cold spots as you drift off to sleep. The Helium also sports an anatomically designed footbox and drawcord hood to keep your extremities toasty, and it uses a dual-zipper construction to let you fold down the top of the bag to sit up and increase ventilation when the night is a little warmer than expected.
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Marmot Helium Sleeping Bag: 15 Degree Down ships and sold by Backcountry
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