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  • With a European Norm (EN) lower-limit rating of 0°F, the Never Summer sleeping bag is suitable for fall, winter and spring use
  • 650-fill-power duck down insulation is protected by a durable nylon shell with a water-repellent finish
  • Down is treated to resist moisture to maintain warmth in damp weather; treated down stays drier 10x longer, maintains 150% more loft and dries 30% faster than untreated down
  • 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; pocket in the footbox lets you slip in a hand warmer (sold separately)
  • Stash pocket on the top chest near hood stows nighttime essentials
  • Ground-level side seams keep warm air from escaping
  • Heat bump draft tube backing full-length, snag-free zipper prevents 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 Sleeping Bag includes 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 0 degrees Fahrenheit
EN Comfort 14 degrees Fahrenheit
Temperature Rating (F) 0 degrees Fahrenheit
Temperature Rating (C) -18 degrees Celsius
Weight 3 lbs. 4 oz. / 3 lbs. 8 oz.
Shell Nylon
Zipper Location Left
Insulation Type Down
Water-Resistant Down Yes
Fill 650-fill duck down
Fill Weight 1 lb. 14 oz. / 2 lbs.
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 8.5 x 18 inches
Stuff Sack Volume 17 liters
Compressed Volume 9.7 / 10.1 liters
Gender Unisex