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Marmot Plasma 40 Degree CLEARANCE Sleeping Bag


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Item # MAR94201M
Weighing just over a pound and featuring premium 875+ fill power goose down insulation, the high-performance Marmot Plasma 40 Degree down sleeping bag is ideal for warm weather backpacking.
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Weighing just over a pound, the high-performance Marmot Plasma 40 Degree down sleeping bag is ideal for warm weather backpacking. Premium 875+ fill power goose down insulation, Insotect Flow technology and vertical baffling create an extremely lightweight, compressible package for backcountry adventure.

The Plasma 40 Degree is insulated with certified 875+ fill power goose down. Fill power measures the loft or "fluffiness" of down insulation and Marmot goes to great lengths to guarantee the 875+ certification with a battery of in-house and external verifications. Renowned for their efficiency in retaining heat and compressible properties, down fibers have an incredibly soft, comfortable feel and, despite advances in synthetic materials, continue to provide the best warmth-to-weight ratio of any insulation available. The one weakness of down insulation is that it loses much of its ability to maintain warmth when it gets wet; this is less of a problem in the Plasma 40 Degree, though, since the down in this bag is protected with Marmot’s Down Defender water repellent treatment that allows the down to stay drier 10 times longer than untreated down in damp conditions. Down Defender down also Maintains 150% more loft and dries 30% faster than untreated down.

Insotect Flow construction is used in the Plasma 40 Degree sleeping bag to provide better thermal value and increased weight reduction. Strategically placed baffles eliminate lateral and vertical down shifting by using vertical chambers with flow gates to control the position and density of the down insulation. This technology also enables the user to manually shift the down to preferred locations, customizing the sleeping system to each individual. Wrap-around foot box construction incorporates the flow design with Marmot's classic, trapezoidal shape for increased warmth and a comfortable fit.

Despite its lightweight construction, the Plasma 40 Degree makes no sacrifice with regard to performance and features. A contoured, ergonomic hood, insulated draft tube, Velcro-free face muff and insulated collar around the neck area seal out cool air and feel soft and comfortable against your skin. Two-way zipper sliders offer venting options and a zipper garage helps to avoid irritating and damaging snags.

The Marmot Plasma 40 Degree sleeping bag is available in Regular (fits up to 6' 0") and Long (fits up to 6' 6") lengths.

  • Certified 875+ Fill Power Goose Down
  • Down Defender to Improve Water-Resistance in Wet Conditions
  • EN Tested
  • Insotect Flow Vertical Baffle System Reduces Weight and Transfers Heat from the Core of Your Body to Your Extremities
  • Designed to Increase Thermal Value Without Adding Weight
  • Ultralight and Durable 10 Denier Pertex Quantum Fabric
  • Wrap Around Foot Box Construction Incorporates Flow Design with Marmot’s Classic Trapezoid Shape
  • Full Length Zipper
  • Insulated Draft Tube
  • Hood Drawcord
  • Insulated Collar with Easy Access Cord
  • Velcro-free Face Muff
  • Two Way Zipper Sliders
  • Two Hang Loops
  • Zipper Garage



Best Use Backpacking, Camping
Insulation Type Down
Warranty Lifetime
Type Down
Temperature Rating 40 Degrees F
Shell Material Pertex Quantum Nylon 10d Micro Ristop DWR
Packed Size 7" x 13"
Other Stuff Sack and Storage Sack Included
Liner Material Pertex Quantum Nylon 10d Micro Ristop DWR
Item Weight 1 lb 2.7 oz
Fits to Length 6' 0"
Fits to Girth 60"
Fill Material 875+ Fill Power Goose Down
EN Lower Limit Rating 43.52 Degrees F
EN Comfort Rating 50.9 Degrees F


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