- Features
- Certified 900+ Fill Power Goose Down
- EN Tested
- Insotect Flow™ Vertical Baffle System Reduces Weight and Transfers Heat from the Core of Your Body to Your Extremities - Insotect Flow™ Vertical Baffle System Reduces Weight and Transfers Heat from the Core of Your Body to Your Extremities.
- Designed to Increase Thermal Value Without Adding Weight - Designed to Increase Thermal Value Without Adding Weight.
- Ultralight and Durable 10 Denier Pertex© Quantum® Fabric - Ultralight and Durable 10 Denier Pertex Quantum Fabric
- Wrap Around Foot Box Construction Incorporates Flow Design with Marmot's Classic Trapezoid Shape
- Full Length Zipper
- Insulated Draft Tube - Eliminates Cold Leaks Through the Zipper
- Hood Draw Cord - Positioned for Easy Access
- Insulated Collar with Easy Access Cord - Engineered to Close Without Velcro, Keeps Warm Air Trapped in Your Bag
- Velcro®-free Face Muff - Keeps the Drawcord and Zipper Away from Your Face
- Two Way Zipper Sliders - For Venting and Mating of Bags. Reversible Slider Tabs for Easy Use Inside or OUtside of Bag
- Two Hang Loops - On the Outside of Foot Box for Airing Out Your Bag
- Zipper Garage
- Linked Styles
- Style Name:Plasma 0 Long
- Style Number:21130
- Weight:2 lbs 9 oz / 1162 g
- Fill weight:28.22 oz / 800 g
- Price:$669.00
- Style Name:
- Specs
- Colors:
- Black/Malaia Gold (1340)
- Overall Weight:2 lbs 7 oz / 1126 g
- Fill Weight:26.45 oz / 750 g
- Size on Hip:58in/147.3cm
- Size on Foot:43in/109.2cm
- Main Material:Pertex Quantum© 100% Nylon 10d Micro Ripstop DWR 0.8 oz/yd
- Lining Material:Pertex Quantum© 100% Nylon 10d Micro Ripstop DWR 0.8 oz/yd
- Insulation Material:900+ Fill Power Goose Down
- Colors:
850 Fill Down

Certified 850+ 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.
Marmot Guaranteed For Life:
Since 1974 we’ve guaranteed every product we’ve made for the life of the product. We believe the best thing for everyone and the environment is to make products that last.
Have a closer look - download the Marmot down desktop and keep your computer warm.

EN Tested
How do I read the EN information?
Basically the EN graphic shows a temperature range:
| Comfort Limit | The first number is based on a standard woman having a comfortable nights sleep |
| Lower Limit | The next number is based on a standard man at the lowest temp to have a comfortable nights sleep |
| Extreme Rating | The last number is a survival rating for a standard woman |
For example, the rating on our Pinnacle 15º Sleeping Bag shows:
| Comfort Limit | 22.2 degrees |
| Lower Limit | 10 degrees |
| Extreme Rating | Minus 24.7 degrees |
In this example, if a woman who sleeps cold is planning a trip with expected lows between 15 and 25 degrees, she could definitely use the Pinnacle 15 bag. But she may instead consider buying a zero degree bag to sleep more comfortably at the lower temperatures.
Testing Center
Marmot began as a sleeping bag company and we continue to pioneer performance, value and insulation standards in the outdoor industry. All Marmot sleeping bags are EN tested to ensure quality and performance. During the development process, we send all samples to the Thelma Testing Center in Norway. We continually use the Thelma Center to achieve continuity in our results.
What is the EN 13537 test? EN, short for European Norm, is a government test for sleeping bags.

How is the EN test conducted? First let’s be clear that it is challenging to test temp ratings because there are so many variables. Every person will sleep differently in the same bag. Choices like clothing, sleeping pad, tent or no tent, eating and drinking before bed can all affect one’s sleeping experience. For the EN test, a copper mannequin named Charlie is fitted with 20 sensors and a clothing layer (top, bottom, and socks) that provide a consistent thermal value. The mannequin is placed in the sleeping bag and put onto a wood platform roughly 12mm thick. The board is held above the floor with some support which allows air circulation under the board. The board is covered with a mattress that has a consistent thermal value then placed in a cold room. A mathematical formula is used to measure the data received from the sensors based on human modeling.
Why is there an EN Test hangtag on Marmot bags? Marmot sleeping bags sold in Europe require this testing and hangtag. We include this hangtag on all of our bags, as we believe it is the most reliable and accurate measure of the performance of a sleeping bag currently available.
How does EN testing differ from other methods and is it better? When Marmot first started testing bags, especially when we used Gore-Tex® fabric, our designers would go into meat lockers and sleep over night. Once they were able to sleep through the night they looked at the amount of fill to determine the temp range. Nowadays it is a bit more scientific. The testing method used in the US is very similar to the EN test. They use a copper mannequin, but the clothing, pad, and math formula are different. Again we feel the EN test is the most reliable and accurate measure of the performance of a sleeping bag currently available.
Has the feedback from the EN testing improved the designs of Marmot bags? Yes it has. The vast majority of our bags have tested to our current temp ratings. In some cases, the tests showed our bags were actually warmer than the rating we gave it. In another instance, there was a spot that showed room for improvement which led to more efficient baffle construction. With our baseline testing started in 2004, we can now measure improvement over time through new fabrics, insulation, and construction techniques.
Will the EN test become an industry wide standard? That is unknown. Currently our industry can’t agree on how the testing should be done because of all the variables. The European government has stepped in and taken control of standardized testing. For the meantime, Marmot will continue to test with the EN standard.
Marmot rating vs. EN rating?
Marmot’s assigned temperatures are comparable
to the EN lower limit rating.
During Marmot’s development process we send
all samples to the Thelma Testing Center in Norway.
Continually using the Thelma Center allows us to achieve continuity in our results.
Curly's Clips - Marmot Down
Marmot's own Curly Cervone and Randy Verniers explain why Marmot Down is the best on the market.
Curly's Clips - Caring for Marmot Sleeping Bags
Marmot's own Curly Cervone and Brian Rashap demonstrate how to properly care for you Marmot sleeping bag.
Curly's Clips - EN Testing
Marmot's own Curly Cervone and Randy Verniers explain EN Testing on sleeping bags and how it can help you as you shop for the perfect bag in this edition of Curly's Clips.









Reviews and comments
on 6/7/13.
Such a soft, comfy bag! The fabric feels like silk, and and it's super quiet when you move around a little. The feathers don't seem to be able to make their way through that Pertex fabric, which is a nice unexpected bonus. I just got back from camping (in a 3-season tent) for twenty nights in Colorado where it was in the low 30's with rain/snow occasionally. I left it unzipped as if it's a blanket and was PLENTY warm. Overall I'm super happy with it!
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