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No, you're not dreaming. The Marmot Plasma 15 Sleeping Bag comes in under 2 lbs. (regular length) with 875-fill-power, water-resistant goose down—backpacking season can't get here soon enough!

  • Features

    • With a European Norm (EN) lower-limit rating of 18°F, the Plasma 15 sleeping bag is suitable for 3-season use and occasional winter outings
    • Filled with certified, super-lofty, ultralight, 875-fill-power goose down (the largest down cluster with the lowest trace of feather) for an unsurpassed warmth-to weight ratio
    • Down is treated to resist moisture to maintain warmth; treated down stays drier 10 times longer, maintains 150% more loft and dries 30% faster than untreated down
    • Pertex® Quantum nylon ripstop shell is lightweight, durable and silky soft
    • Shell is treated with a Durable Water Repellent finish that causes moisture to bead up and roll off
    • Hood drawcord and insulated collar envelop your head and shoulders in warmth; down gasket face muff lets you cinch the hood snug without it digging into your face
    • Vertical baffles prevent cold spots by keeping the goose down fully lofted and in place
    • Down-insulated draft tube backs the two-way, full-length zipper to keep the cold out
    • Wrap-around footbox construction reduces down compression; Flow design with the classic trapezoidal foot box shape lets feet move freely and keeps down lofted for warmth
    • Zipper guard runs the entire length of the draft tube to prevent fabric from getting caught in zipper
    • Marmot Plasma 15 Sleeping Bag features an ultralight stuff sack and storage bag


    Many sleeping bags are rated for temperature by an independent testing protocol. With both European Norm (EN) 13537 and International Organization for Standardization (ISO) 23537 testing, each bag gets a Comfort (or T-Comfort) rating and Lower (or T-Limit) rating. The Comfort/T-Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower/T-Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Ratings are based on a person wearing one long underwear layer and a hat, sleeping on a single 1 in. thick insulating pad. Many brands use the Comfort rating for women's bags and the Lower rating for men's and unisex bags. Everyone's body and sleep comfort differ, so EN and ISO ratings are simply a guideline to help you compare products.
    View all Marmot Men's Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit

    18 degrees (F) - EN

    Tested Comfort

    29 degrees (F) - EN

    Temperature Rating (F)

    15 degrees (F)

    Temperature Rating (C)

    -9 degrees (C)





    Zipper Location


    Insulation Type


    Water-Resistant Down



    875-fill goose down



    Sleeping Bag Shape


    Stuff Sack Size

    7.5 x 15 inches

    Stuff Sack Volume

    11 liters



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