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Marmot Lithium 0 Degree (2023) Sleeping Bag

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An ultra-lightweight option for cold-weather backpacking, the Marmot Lithium 0 Degree sleeping bag employs high-performance water-resistant down insulation and premium sustainable fabrication to offer reliability even in challenging conditions.


  • Water-resistant down insulation ensures all-condition performance: The bag utilizes certified 800+ fill power goose down with ExpeDRY to grant an excellent warmth-to-weight ratio with weather-resistance to keep on insulating even when damp or wet. Recycled Pertex Quantum shell fabric increases weather-resistance.
  • Thermally efficient design features: The bag's mummy shape helps to reduce weight and eliminate cold spots and curved baffles reduce down shifting to further ensure consistent warmth. An anatomically designed footbox increases warmth in a common area of heat loss.
  • Unique zipper configuration adds versatility: The main zipper running down the side of the bag has a smooth-gliding anti-snag slider and a second zipper segment on the other side allows the front of the bag to fold down for easier access and for venting on warmer nights.
  • ISO tested to confirm the bag's temperature rating: Marmot took all the necessary steps to test the Lithium so backpackers can be confident in its 0 degree Fahrenheit temperature rating.

Sizing and fit
The Lithium 0 Degree bag is available in Short (fits up to 5' 6"), Regular fits up to 6' 0") and Long (fits up to 6' 6") size options. A stuff sack and storage sack are both included.

Technical Specs

Best Use
Backpacking, Camping
Fill Material
800-fill-power goose down with eco-friendly ExpeDRY water-repellent finish
Fits To Girth
Short: 58"
Regular: 61"
Long: 63"
(Shoulder girth)
Fits To Length
Short: 5' 6"
Regular: 6'
Long: 6' 6"
Temperature Rating
0 degrees F
Insulation Type
Item Weight
Short: 2 lbs 14.1 oz
Regular: 3 lbs 0.9 oz
Long: 3 lbs 4.9 oz
Storage bag and stuff sack included
Limited Lifetime
Packed Size
16.1" x 7.5"
Shell Material
Pertex Quantum 100% Recycled Nylon Ripstop
Liner Material
100% Recycled Nylon Plain weave

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