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Marmot Women's Phase 20 Degree Sleeping Bag

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$126.49 (25%)

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Marmot Phase Sleeping Bag Series

By Cheyne

Enwild Gear Specialist

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Weighing slightly more than a pound-and-a-half, the high-performance Marmot Women's Phase 20 Degree sleeping bag offers the warmth and compressibility for 3-season backpacking.


Weighing slightly more than a pound-and-a-half, the high-performance Marmot Women's Phase 20 Degree sleeping bag offers the warmth and compressibility for 3-season backpacking.

Marmot accounts for the anatomical differences between male and female campers and hikers when constructing gender-specific sleeping bags. Increased insulation in key areas better addresses those areas where women most often experience heat loss. A tapered cut provides a narrower fit at the shoulders and a wider flare at the hips to ensure a comfortable fit and maximum thermal efficiency. The shorter lengths of Marmot's women's bags help to avoid cold spots and make certain that your body isn't working unnecessarily to heat uninhabited areas of the bag.

The bag is insulated with certified 850+ fill power goose down. Fill power measures the loft or "fluffiness" of down insulation and Marmot goes to great lengths to guarantee certification with a battery of in-house and external verifications. Renowned for their efficiency in retaining heat and compressible properties, down fibers have an incredibly soft, comfortable feel and, despite advances in synthetic materials, continue to provide the best warmth-to-weight ratio of any insulation available. The one traditional weakness of down insulation is that it loses much of its ability to maintain warmth when it gets wet. Not so on the Phase, which is protected with Marmot's Down Defender water-repellent treatment that allows the down to stay drier longer than untreated down in damp conditions. It also maintains significantly more loft and dries faster than untreated down. Pertex Quantum 10D nylon ripstop shell fabrics help to protect the insulation while keeping weight to a minimum.

Curved horizontal baffles keep insulation from migrating, reducing "dead spots" and ensuring that you experience consistent warmth. An anatomical footbox provides comfortable space for your feet and focuses additional insulation in a spot that is vulnerable to losing warmth. Other features include a contoured, ergonomic hood, a full-length two-way zipper that offers a venting option, and anti-snag zipper construction.

The Marmot Women's Phase 20 Degree sleeping bag fits to 5' 6".

  • Slim mummy fit
  • 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
  • Filled and finished in Rohnert Park, CA
  • Certified 850 fill power down with Down Defender to improve water resistance in wet conditions
  • EN tested
  • Internal stash pocket
  • Snagless draft tube

Technical Specs

Best Use
Backpacking, Camping
Fill Material
850+ Fill Down w/ Down Defender
Fits To Girth
Fits To Length
5' 6"
Temperature Rating
20 Degrees F
Insulation Type
Item Weight
1 lb, 11 oz
Stuff Sack included
Limited Lifetime
Packed Size
7.5" x 16"
Shell Material
Pertex Quantum 10D recycled nylon ripstop
Liner Material
Pertex Quantum 10D recycled nylon ripstop

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