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Marmot Helium Sleeping Bag Review


Marmot Helium (Membrain Shell) $469
1 pound 15 ounces (nylon); 2 pounds 5 ounces Membrain
Rating 15 F
Field Rating 15 F

Classic mummy, cut wider than the Feathered Friends Swallow, this bag easily has enough room for layering. It has a full-length zipper with separate foot opening and a comfortable, warm, easy-to-tighten hood. The Membrain Shell (Marmot's proprietary waterproof/breathable shell material) did a great job of repelling frost and dew and was close to the Feathered Friends eVent as the most protective shell fabric. The Marmot bag is for those who want a little more tossing and turning room than the Feathered Friends or Mountain Hardwear but still want a mummy, rather than a big bag that needs a lot of air to warm up. This was considered the favorite bag, along with the Valandre Mirage, for layering with down pants and jacket, and then sleeping comfortably in temps way below its listed temperature range. The Helium is an excellent bag for those climbing in the high Andes.

Easy to operate hood.
Roomy enough for layering.

Terrific bag that’s light enough for summer and warm enough for winter (with layering).

Membrain shell is weatherproof and breathable, but also adds 6 ounces, making it theheaviest bag tested.

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