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Marmot Phase 20 Sleeping Bag - Mountain Steals
Marmot Phase 20 Sleeping Bag
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Marmot
Phase 20 Sleeping Bag

Marmot Phase 20 Sleeping Bag is rated 4.6 out of 5 by 20.
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4.6 Star Rating
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The Marmot Phase 20 Sleeping Bag is a down sleeping bag for colder weather camp and backpack trips. The smooth and durable exterior fabric is a Pertex nylon ripstop, which holds and protects the down as well as makes it nice and easy to stuff into the included stuff sack. The 850+ down fill power is not just warm through the cold 20°F nights, but is very light and quite packable for hauling. Mummy shape for bringing the heat in close on the chilly evenings.

Products on Sale are Discontinued Styles or Colors.
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Product Description
Item No.   10474062
 

FEATURES of the Marmot Phase 20 Sleeping Bag

  • Anatomically designed footbox with wrap-around construction increases warmth
  • Smooth, curved baffles reduce down shifting while nautilus multi-baffle hood limits heat loss
  • Full length, locking YKK two-way zipper with anti-snag slider
  • Certified 850 fill power down with Down Defender to improve water resistance in wet conditions
  • EN tested
  • Internal stash pocket
  • Snagless draft tube

Fabric Details

  • Pertex Quantum 10D 100% Recycled Nylon Ripstop
  • Lining: Pertex Quantum 10D 100% Recycled Nylon Ripstop

Product Specifications
Features: Internal Pockets, Insulated, Water-resistant, Locking
Extreme Temperature Rating: -9 Degrees Fahrenheit
Sleeping Bag Lining: 20D 100% Polyester Taffeta
Fill Weight (Long): 16.6 oz
Max User Height (Long): 6 ft 6 in.
Foot Circumference (Long): 47 in.
Shoulder Circumference (Long): 62 in.
Hip Circumference (Long): 60 in.
Product Technology: Pertex Quantum Air
Best Use: Camping
Temperature Rating: 11 - 20 Degrees Fahrenheit
Exact Temperature Rating: 20 Degrees Fahrenheit
Sleeping Bag Shape: Mummy
Fill Details: 800+ Fill Power Goose Down
Pertex Quantum Air

Pertex Quantum Air
Quantum Air fabric is lightweight and breathable. Focusing on increased air permeability, it lets air in, allows body heat out, while still providing wind- and water-resistance for high-output activities on the mountain.

Check Out All Pertex Quantum Air >

Product Reviews
Rated 5 out of 5 by from Great bag Bought this bag two years ago to have my ultralight thru hike kit prepared, wanted the lightest, warmest thing possible. The zipper sucked, and my knee broke through one night while I turned, it was frustrating that something so small could turn my sleeping bag into a quilt! I sent it back for the full return process, asking them to please put a better, hardier zipper on the bag…. AND THEY DID! I just took it out to Yosemite and it performed perfectly, still like and super small in the pack, still warm and tough, but with a big, thick zipper to compensate for the pressure that the small footbox puts on the side of the zipper. Perfect bag now
Date published: 2021-07-12
Rated 4 out of 5 by from Light weight! [This review was collected as part of a promotion.] I was looking for a light weight down bag that is cool with getting damp once in a while, this bag is the one for that, the down iOS treated with Down Defender allowing it to maintain its performance when damp keeping you warm on those colder nights. Yes as you may have read elsewhere that the zipper is inadequate but if you are patient and taking your time the zipper works just fine. All in all I love this bag for its warmth, packability and being lightweight.
Date published: 2020-04-30
Rated 4 out of 5 by from 6 stars out of 5 - for everything but the zipper. This bag is superb. It's light, compresses very small (with a third-party compression sack - 6L will work). Amazing loft. The fabric is light but strong, very soft. Best sleep I've had in a sleeping bag. The 3/4 length (*NOT* "full length") zipper does vent well when you have the bottom open. Maybe my (three) other bags are also "narrow". But I have no concern with it being tight in any place, plenty roomy to me (5'10 / 180 lbs). Initially I thought the lightweight zipper really wasn't all that bad (see other reviews). But after several nights, I can now say that it definitely is problematic. You cannot open the zipper unless you have it just right - it jams solid otherwise. Yes - it contributes to the light weight. But I can see myself tearing the bag in a panic if I have it zipped up and can't get it open. Overall though, this will be my go-to bag. I'll take the fiddly zipper, for the size and weight and comfort. This definitely compares to the other two brands' hyper-premium bags at twice the price.
Date published: 2020-10-14
Rated 3 out of 5 by from Light weight bag but the zipper needs some upgrade Good quality bag. The zipper is trash and hard to use. It sticks and is hard to use. Ill try are replace it with a larger zipper. I am 6' 177lbs and the bag is snug but comfortable. I used it for a september hunt where temps were in the mid to high 40's. Havent had the opportunity to test out the warmth in lower temps.
Date published: 2020-10-16
Rated 4 out of 5 by from Lightweight and very warm. I bought this mainly for bikepacking in spring/fall. It’s super warm, and at 6’1”, I’m glad I got the Long. At this price, it really should come with a compression sack instead of just a stuff sack. Glad it comes with a mesh storage bag though.
Date published: 2020-10-24
Rated 5 out of 5 by from 850 Fill Simply the Best [This review was collected as part of a promotion.] As soon as you touch this bag you know this is going to be warm. The 850 fill is thick and lofty. Was as warm as toast in the 30’s with plenty of room to spare on the thermometer. The zipper is light weight and you need to finesse it a bit, but all bag zippers can snag.
Date published: 2020-05-10
Rated 5 out of 5 by from Solid sleeping bag Super warm, high quality sleeping bag. It's extremely light and while also packing to a small size.
Date published: 2020-11-18
Rated 5 out of 5 by from Excellent lightweight, down LONG bag, beats quilts I have quilts also, but this is definitely warmer when it gets colder; it's nice to be able to zip up and stay warm without adding your hat and multiple layers. However, when getting down to 20 degrees or so, I add layers as I sleep cold. The 25 oz weight makes it a great addition to a lightweight pack. I'm from Colorado and it's great for the high altitude cold nights.
Date published: 2022-02-04
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