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Never Summer MemBrain (-18C)

$999.00

When you’re cloud-high during shoulder season, the weather can be somewhat unpredictable. Make sure your sleep isn’t. This bag is stuffed with quality 600+ fill down for warmth down to 0° F, and protected with Marmot’s MemBrain® fabric for outstanding waterproof, breathable comfort.

FEATURES

  • Certified 600+ Fill Power Goose Down
  • EN Tested
  • Down-filled Collar with Easy Access Draw Cord
  • Heat Bump Draft Tube
  • Marmot MemBrain® Waterproof/Breathable Fabric - Marmot MemBrain, Waterproof/Breathable Fabric
  • Classic Trapezoidal Foot Box - For More Foot Room
  • "Feely" Draw Cords - Ease Nighttime Cord Fumbling
  • Ground-Level Side Seams - Eliminates Drafts
  • Heater Pocket in Foot Box - For Heat Packets
  • Hood Draw Cord - Positioned for Easy Access
  • Locking Zippers - Keep the Bag from Opening Up in the Middle of the Night
  • Nautilus 6-Baffle Hood - 6 Chambers of Down Around Head for Better Down Control and Fit, Hood Cord is Positioned for Easy Access
  • Stash Pocket - For Nighttime Essentials Such as a Watch or Energy Bar
  • Stretch Tricot Baffles - Provide Ultimate Strength, Durability and Bag Life
  • Stuff and Storage Sack Included - Store and Pack Just Like Your Sleeping Bag
  • Two Hang Loops - On the Outside of Foot Box for Airing Out Your Bag
  • Two Way Zipper Sliders - For Venting and Mating of Bags. Reversible Slider Tabs for Easy Use Inside or Outside of Bag
  • Velcro®-free Face Muff - Keeps the Drawcord and Zipper Away from Your Face
  • Zipper Guards - Help Repel Biting Zipper Coils

SPECS

  • Size: Regular 6'0"/LFT, Regular 6'0"/RHT
  • Weight: 3 lbs 13 oz / 1729 g
  • Fill Weight: 30 oz / 850 g
  • Size on Hip: 57in/144.78cm
  • Size on Foot: 41in/104.14cm
  • Main Material: MemBrain®2L 100% Nylon Ripstop 2.0 oz/yd
  • Lining Material: 100% Polyester Dobby WR 2.2 oz/yd
  • Insulation Material: 600+ Fill Power Goose Down

EN TESTED

  • Comfort: -6.4C
  • Lower Limit: -13.3C
  • Extreme: -33.1C

Read more about EN Testing or watch a video about the EN Sleeping Bag Test

 

TECHNOLOGY
Marmot MemBrain®

MemBrain® fabric balances the best performance in waterproof, breathable fabric with excellent durability.

MemBrain® reduces internal condensation while increasing comfort by reducing the chilling effect caused by condensation build-up. When used with insulated garments or sleeping bags, MemBrain® protects the insulation from harsh weather conditions.

600 Fill Down

Certified 600 Fill Goose Down bags are constructed with the following features:

Nautilus Hood: the same construction as our 8000m jacket hood, a 3D hood that wraps around your head and reduces heat loss.
Hood Muff: creates a warm down gasket around your face, keeping the drawcord away from the face.
Stretch Tricot Baffles: allow the bag to be stuffed and unstuffed without tearing the baffle material.
Trapezoid Foot box: matches the shape of your feet, wider in the toe area and narrower in the heels. Down Fill Oversized Draft Tube: eliminates cold spots
Zipper guard: keeps the draft tube fabric from getting caught in the zipper
Ground Level Seams: top layer wraps fully around the body creating a warm layer of down.

Down

From the beginning, down has been Marmot’s foremost insulator. No synthetic surpasses the lightweight, compactability and longevity of down.

Marmot Down DNA:
Down is in our DNA. Marmot was founded in 1974 as a manufacturer and seller of premium quality down jackets, vests and sleeping bags. To this day we only use the finest quality certified goose down for our down insulated outdoor products. Mountaineers and outdoor enthusiasts worldwide rely on Marmot down gear for warmth, comfort, and sometimes survival.

Marmot Down Quality:
Down quality is determined by fill power and durability which is dependent upon the age/maturity of the bird and the processing of the down. The best down comes from larger, more mature birds and goose down is better than duck down (when age/maturity are equal). More mature goose down has larger filament clusters than less mature goose down. These clusters, when grouped, provide many more trapped air pockets and therefore provide better insulation. To maximize the effectiveness of the down clusters, the proper processing of the down (sorting, washing & drying) is required to open them up.

Higher fill power means higher loft, better insulation, lighter weight, and greater durability. We test all of our down for content, cleanliness, species, and fill power. We guarantee minimum fill power for all of our down clothing and sleeping bags. That means, for example, that our 800 fill sleeping bags are guaranteed to have at minimum 800 fill power. We don’t believe in + or – variation when it comes to comfort.

Down Origins:
Down is the light, fluffy undercoating at the base of the feathers of waterfowl. Down is a multi-dimensional structure that insulates by creating pockets of still air that retain body heat. Down is highly breathable and exceptionally comfortable. Pound for pound, high quality down is the most efficient natural insulator there is.

Geese are raised primarily for food and the down that is derived from them is a by-product of the food industry. Geese are raised on large and small farms and roam free outside on these farms. This is their natural environment. They are not raised indoors in controlled conditions. Geese are grain fed and also have access to local plant life.

Geese are generally harvested after 4-9 months for food. Some female geese are kept for breeding stock and are harvested between 1-2 years. These are the geese called the “mother birds” that provide the best, most mature down. After the geese have been harvested for food, the down and feathers are removed, washed, dried and then sorted by separating the down and small feathers from the larger, heavier feathers. These processing methods determine the final quality and fill power of the down. Marmot currently buys down primarily from Russia, Poland & China.

VIDEO

Curly’s Clips – Handcrafted Sleeping Bags

Marmot's own Curly Cervone shows us the Marmot Down Room in Santa Rosa, CA, where the brand's 850+ fill sleeping bags are filled, sewn and hand crafted at Marmot Headquarters.

Watch videos about Caring for your Sleeping Bag and Down vs Synthetic Insulation