Teton Sports Introduces the Mammoth Double Sleeping Bag

This March, Trail Sherpa is taking a month-long look at the Teton Sports Mammoth Double Sleeping Bag with featured stories and reviews by the Trail Sherpa outdoor bloggers. Stay tuned for new articles all month long!

Teton Sports is well-known for its feature rich gear at entry level price points. And the team is at it again with the Fahrenheit line of sleeping bags including the new Mammoth 20° Sleeping Bag. The Mammoth is a double sleeping bag with a 100% cotton liner that adds a level of comfort to any base camp. Inspired by the original Celsius line of bags, the Fahrenheit bags feature a cotton flannel liner and can be expanded by zipping more than one bag together.

The Mammoth has a throw-back feel, offer much more loft than the average bag, feel as comfortable as your bed sheets at home, and will remind many of the bags they used before synthetics were introduced.

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Behind The Scenes With Teton Sports

Interview with TETON Sports designer Shawn Parry

By: Erika Wiggins
My first sleeping bag was a substantial puffy cocoon lined in soft cotton, nothing like the gossamer light, synthetic-lined bags I carry backpacking today. In a less tangible way, my first bag made me feel closer to home. When I’m car camping, I still want that luxury sleeping bag… read more

The Science of Sleeping Bag Design

By: Wilderness Dave
The science behind sleeping bag design is at once simple, and yet very complicated. For many years sleeping bag designs have changed and evolved to incorporate the latest technological breakthroughs and use the latest innovative fabrics and materials available…. read more


Technical Specs

The Teton Sports Mammoth 20° Double Sleeping Bag delivers comfort in camp:

  • Pack size: 27” x 14” x 14”
  • Pack weight: 15 lbs
  • Storage: Oxford Compression Sack with Drawstring Closure
  • Dimensions: 94” x 62” – nearly the size of a queen mattress
  • Temperature rating: -7°C / +20°F
  • Shell: Taffeta
  • Fill: SuperLoft Elite 4-Channel Hollow Fiber
  • Lining: 100% Cotton Flannel
  • Zipper: Three side zip with full length zipper baffles to reduce drafts
  • Mummy style hood keeps head and pillow off the ground

Gallery: A look at the Mammoth 20°

Sherpa Reviews of the Mammoth 20°

Fahrenheit XXL 0°F Sleeping Bag

By: Wilderness Dave
I really do love backpacking. In reality tough, I do more day hikes than backpacking. If I want to camp with a group or with my wife, more often than not we will drive in, set up base camp and do… more

Teton Sports Mammoth Double Sleeping Bag

By: Amelia, Mountain Mama
When I was in high school, I clearly remember walking into a Cabelas and seeing a Family/Double sleeping bag hanging on the wall. I immediately tagged it as crazy…. more

Teton Sports scores big with the Mammoth +20° bag

By: Tim Miner
Tank is still too restless for his own sleeping bag. But he will celebrate his 2nd birthday this summer, probably sleeping in the Teton Sports Mammoth double sleeping bag…. more

The Mammoth 20° in Action

About Teton Sports

t-logoServing the novice and occasional outdoor enthusiast, Teton Sports offers tents, sleeping bags, backpacks, and accessories to get you started. The company maintains low overhead and sells through a select number of retailers to deliver more bang for the buck in each and every piece of gear it sells. The company’s nimble nature also helps it focus on innovation and deliver new versions of its core product line quickly.

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Connect with Teton Sports:

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