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  • Mountain Equipment - Helium 800 Sleeping Bag: 3 Degree Down - Cosmos

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  • Mountain Equipment - Helium 800 Sleeping Bag: 3 Degree Down - Cosmos

Mountain Equipment Helium 800 Sleeping Bag: 3 Degree Down

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    • Cosmos

    1 Review


    Light and loaded with warmth.

    Part of Mountain Equipment's Helium collection of lightweight, alpine-inspired bags, the Helium 800 Sleeping Bag maximizes warmth-to-weight when you're sleeping outside in cold, dry conditions inherent to high-altitude climates. Mountain Equipment rates it down to 3-degrees Fahrenheit, ensuring you'll stay toasty in sub-freezing temperatures at higher altitudes and overnight outings in wintertime.

    700-fill pure duck down insulation provides thermal efficiency on those freezing nights at altitude and ensues compressibility when pack space is a premium commodity, such as extended backcountry missions. The Helium 20D shell fabric shaves excess bulk from this sleeping bag and breathes well overnight—all without sacrificing much in the way of durability. Slanted box-wall baffles prevent down migration issues and provide thermal efficiency to keep cold spots from stealing precious body heat. Additionally, you'll find a full-length Gemini zip baffle and integrated collar with locking closure to prevent heat loss when temperatures plunge overnight.

    • Toasty-warm, exceptionally light bag for cold nights at altitude
    • 700-fill pure duck down insulation maximizes warmth-to-weight
    • Mountain Equipment rates this bag to 3°F for warmth in winter
    • Helium 20D fabric is ultra-light and breathes well
    • Slanted box-wall baffles for thermal efficiency
    • Gemini zip baffle and locking collar retain heat
    • Item #MEQ008P

    Tech Specs

    [shell] Helium 20
    700-fill pure duck down (90% down, 10% feathers)
    full-length zip with Gemini baffle
    Max User Height
    [regular] 6 ft, [long] 6 ft 6 in
    Draft Tube
    integrated collar with Lode Lock closure
    Fill Weight
    [regular] 766 g (27 oz)
    3° F
    European Norm Comfort Rating
    25° F
    Storage Sack
    yes, storage cube included
    Stuff Sack
    yes, waterproof roll-top stuff sack
    Stuff Size
    [regular] 11 x 9 x 7.8 in
    Claimed Weight
    [regular] 2 lb 10 oz (1260 g)
    Recommended Use
    backpacking, mountaineering
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

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    Great bag for the money

    • Familiarity: I've used it several times

    My wife and I both use this bag and love it. (She has the women's version). We have used it for winter camping in New Hampshire's White Mountains (our homestate) and have been very comfortable when the temps hit the low teens to single digits. We recently took the bags to high camp (18k feet) on Nevado Ausungate in Peru and were perfectly comfortable in long underwear and a light midlayer even with the added chilling effects of altitude. No complaints here!

    Great bag for the money