Col MemBrain

$649.00 – $669.00  | #20080

All the comforts of home at fifteen thousand feet. Rated to -20 degrees, Fahrenheit—this bag is filled in Santa Rosa, California with high quality 800+ fill goose down, and constructed with MemBrain® waterproof, breathable fabric for outstanding weather resistance and durability. The down-filled draft tube features a hidden pocket for stashing nighttime essentials.

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Col MemBrain


Feature List
11-Baffle Foot Box, 9-Baffle Chest Section, Certified 800+ Fill Power Goose Down, Down-Filled Draft Tube, 'Feely' Draw Cords, Filled and Finished in Santa Rosa, California, Ground-Level Side Seams, Hidden Draft Tube Pocket, Marmot MemBrain Waterproof/Breathable Fabric, Nautilus 6-Baffle Hood, Reinforced Foot Box Lining, Stretch Tricot Baffles, Stuff and Storage Sack Included, Velcro -free Down-filled Collar, Velcro -free Face Muff, Zipper Guards
Main Materials
MemBrain® 2L 100% Nylon Ripstop 2.3 oz/yd
3lbs 14.59oz (1774g)
Fill Weight
38oz (1077g)
Bag Temperature F
-20° F
Bag Temperature C
-29° C
Bag Loft
Bag Zipper position
Lining Material
100% Nylon WR 1.4 oz/yd
Insulation Material
800 Fill Power Goose Down



What is it?

Marmot Membrain lamination utilizes advance technology that balances the best in performance of breathability, waterproofness, and water repellency with excellent durability. With a minimum of 10, 000mm / 10,000mm performance it's guaranteed to keep you dry and comfortable in the worst of weather.

How does it work?

Marmot Membrain technology offers excellent weather protection with interior comfort. The hydrophilic nature of the PU lamination reduces internal condensation and increases comfort range by reducing the chilling effect caused by converting condensation build up back into vapor.

What are the benefits of this technology?

This 2 Layer Lamination combined with superior face fabrics, create a soft, quiet waterproof and breathability fabric with superior performance. With excellent breathability, and long term durable waterproofness this advance fabric technology brings a new level of performance to value conscious consumers.

Performance Specifications

Waterproofness: 10,000 mm minimum JIS-L 1092
Breathability: 10,000 gm / 24h minimum JIGS-1099 B1
Hohenstein RET: 6 to 8
Technology: 2 layer Hydrophilic PU Lamination

Wash & Care

Why do we encourage proper care of our clothing and gear?

Because you have invested in (or are thinking about investing in) one of the most technically advanced pieces of apparel or equipment you'll ever own and we want to make sure you have the information you need to protect and care for your purchase. Proper care assures you will optimize the performance of your Marmot product and maximize its service-life.

Sleeping Bag Care

  • Hand wash warm, 105 degrees Fahrenheit or 40 degrees Celsius or machine wash Warm, Gentle cycle in a front load washer only.
  • If you need to use a detergent, only use powdered form
  • Rinse thoroughly
  • Do not wring your sleeping bag
  • Hang dry or tumble dry on low heat. If tumble drying a down bag, toss a couple of clean tennis balls in the dryer to help re-loft the bag
  • After your bag is dry, store in a loose storage container. Cotton or mesh stuff sacks or extra-large pillow cases work well
  • Do not store in a space where temperatures could exceed 125 degree Fahrenheit
  • Do not bleach
  • Do not iron
  • Do not dry clean