Big Agnes  Anthracite 20 Sleeping Bag - Men's

Color: Blue
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Stay cozy in the men's Big Agnes Anthracite 20, a mummy-style sleeping bag that's light enough to stuff in your pack for summer backpacking but comfortable enough for backyard campouts with the kids.


  • This traditional mummy bag provides technical, lightweight performance to excel on and off the trail with high thermal value, compressibility and comfort wherever you go
  • Recycled ripstop shell fabric and lining feature a PFC-free water-repellent finish
  • Fireline™ PRO Eco Recycled synthetic insulation is made with multidenier, short-staple fibers with high loft to efficiently trap heat
  • Silky insulation fibers provide a soft feel and great compression for packability
  • Roomier mummy shape than a traditional bag design for light weight and increased thermal value
  • Contoured hood follows the shape of your head for a more comfortable fit
  • Low-profile cordlock lets you uncinch the hood with one hand
  • Insulated tube along upper hood opening seals out drafts when cinched
  • 65 in. (165 cm) YKK #5 antisnag locking 2-way zipper with zipper garage offers a smooth, quick zip
  • Oversize interior anti-draft collar and no-draft zipper
  • Interior fabric loops let you secure a sleeping bag liner (liner not included)
  • Exterior loops for hang drying or storage
  • Mate together left- and right-zip bags (additional sleeping bag not included)
  • Stuff sack included


Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Big Agnes Backpacking Sleeping Bags

Technical Specs

Item #216102
Best Use


Tested Lower Limit

22 degrees (F) - ISO

Tested Comfort

32 degrees (F) - ISO

Temperature Rating (F)

20 degrees (F)

Temperature Rating (C)

-7 degrees (C)


Regular - Left Zip: 2 lbs. 12 oz.

Long - Left Zip: 3 lbs. 1 oz.


Recycled 20-denier 400T polyester ripstop with PFAS-free water-repellent finish

Zipper Location


Insulation Type



Fireline PRO Eco recycled synthetic fibers

Fill Weight

Regular - Left Zip: 1 lb. 14 oz.

Long - Left Zip: 2 lbs. 2 oz.


Recycled 50-denier 300T polyester pongee

Sleeping Bag Shape


Fits Up To (in.)

Regular - Left Zip: 72 inches

Long - Left Zip: 78 inches

Shoulder Girth (in.)

Regular - Left Zip: 60 inches

Long - Left Zip: 63 inches

Hip Girth (in.)

Regular - Left Zip: 54 inches

Long - Left Zip: 57 inches

Stuff Sack Size

Regular - Left Zip: 8 x 17.5 inches

Long - Left Zip: 9 x 16 inches

Stuff Sack Volume

Regular - Left Zip: 14.4 liters

Long - Left Zip: 16.6 liters

Compressed Volume

Regular - Left Zip: 7.4 liters

Long - Left Zip: 11 liters




Contains recycled materials

10 reviews with an average rating of 4.6 out of 5 stars

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