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  • Pertex Shield® shell face fabric works together with the Marmot MemBrain waterproof, breathable membrane to protect the down fill from snow, rain and condensation
  • MemBrain is very breathable to allow moisture to escape so you stay dry inside
  • 650-fill-power duck down insulation provides great warmth and keeps the bag lightweight and packable
  • With a European Norm (EN) lower-limit rating of 8°F, the Never Summer MemBrain sleeping bag is suitable for 3-season use and occasional winter outings
  • Nautilus 5-baffle hood envelops your head in warmth; face muff allows hood to be cinched snug without chafing your face
  • No more midnight drawcord fumbling—smooth, flat upper cord and hard, round lower cord make hood adjustments easy
  • Stretch tricot baffles provide strength and durability for long bag life
  • Trapezoidal footbox allows down to loft fully around your feet for optimum warmth and comfort
  • Heater Pocket in footbox allows you to use heat packets (sold separately) to prevent "popsicle toes"
  • Stash pocket on the top chest near hood stows nighttime essentials
  • Ground-level side seams keep warm air from escaping
  • Draft tube backs the full-length, snag-free zipper to prevent cold air from seeping through; down-filled collar adds warmth
  • Locking, 2-way zipper prevents bag from inadvertently opening during the night
  • Marmot Never Summer MemBrain sleeping bag includes a stuff sack and large storage bag
  • European Norm (EN) is an independent third-party temperature rating, allowing accurate comparisons across brands with other EN-rated bags


View all Marmot Men's Sleeping Bags

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Best Use Backpacking
EN Lower Limit 8 degrees Fahrenheit
EN Comfort 20 degrees Fahrenheit
Temperature Rating (F) 8 degrees Fahrenheit
Temperature Rating (C) -13 degrees Celsius
Weight 3 lbs. 13 oz. / 4 lbs.
Shell Nylon
Insulation Type Down
Fill 650-fill duck down
Fill Weight 30 / 32 ounces
Lining Nylon
Sleeping Bag Shape Mummy
Fits Up To (in.) 72 / 78 inches
Shoulder Girth (in.) 63 / 65 inches
Hip Girth (in.) 57 / 59 inches
Stuff Sack Size 9.5 x 19 / 9.5 x 19 inches
Stuff Sack Volume 22 liter
Gender Unisex
Weight - Metric 1.72 / 1.81 kilograms
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