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CWM MemBrain -40° F Sleeping Bag

Out of Stock  Product Number: 21036

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The Marmot CWM MemBrain Long is made with high-quality 800+ fill goose down and MemBrain® waterproof, breathable fabric form the core of this portable environment—designed to deliver restful sleep, down to –40°F, in the harshest alpine environments. Over-engineered with sturdy reinforced linings and countless baffles for a lifetime of dependable comfort and protection.


  • Filled and Finished in Santa Rosa, California
  • Certified 800+ Fill Power Goose Down
  • Marmot MemBrain Waterproof/Breathable Fabric
  • 9-Baffle Chest Section
  • Reinforced Foot Box Lining
  • “Feely” Drawcords
  • 11-Baffle Foot Box
  • Down-Filled Draft Tube
  • Ground-Level Side Seams
  • Hidden Draft Tube Pocket
  • Nautilus 6-Baffle Hood
  • Stretch Tricot Baffles
  • Stuff and Storage Sack Included
  • Velcro-free Down-filled Collar
  • Velcro-free Face Muff
  • Zipper Guards
  • Fill: 800+ Fill Power Goose Down
  • Temperature: -40° F / -40° C
  • Bag Weight: 4lbs 8.89oz (2066g)
  • Fill Weight: 44oz (1247g)
  • Loft: 10
  • 83in (211cm)
  • 63in (160cm)
  • Hip: 61in (155cm)
  • Foot: 44in (112cm)
  • Stuff Sack: 9.5 x 19in
  • 24 x 48cm

Gender: Unisex
Weight: 4lbs 8.89oz
Material: 800+ Fill Power Goose Down,MemBrain 2L
Season: S14 F14
Vendor ProductId: 20120
Review ProductId: 14643

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