TETON Sports Mammoth 20˚F Double Sleeping Bag Grey 110
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag Blue 109
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag
TETON Sports Mammoth 20˚F Double Sleeping Bag

Mammoth 20˚F Double Sleeping Bag

Sale price$179.99

The Mammoth Double Sleeping Bag is the perfect two-person sleep system when you’re looking to enjoy the outdoors together. The soft-to-the-touch liner, draft tubes, and mummy-style hood make it just righ... + Read More

Color:Grey & Red
In stock
Quantity:

Free shipping on orders over $75*

The Mammoth Double Sleeping Bag is the perfect two-person sleep system when you’re looking to enjoy the outdoors together. The soft-to-the-touch liner, draft tubes, and mummy-style hood make it just right for snuggling. Simply bring one sleeping bag to eliminate the hassle of packing two separate sleeping bags and zipping them together. It’s thoughtfully designed so you’ll never want to leave the comfort of your sleeping bag.

  • Car camping double sleeping bag
  • Rated for cold temperatures
  • Sturdy taffeta shell
  • Soft-to-the-touch liner
  • Mummy style hood
  • Double-layer construction entire width and length of bag
  • Full-width baffles and full-length zipper and shoulder draft tubes
  • Sturdy anti-snag two-way zippers with metal pulls
  • Unzip completely to make two camp comforters
  • Lifetime Warranty


  • Two friends with their Numa packs in a field of flowers

    Hike Happy with

    Signal & Numa

    NEW weather-resistant hiking backpacks with body mapping mesh, versatile pockets, and multiple adjustment points for on the trail comfort

    A man backpacking with his Signal backpack

    Hike happy with

    Signal & Numa Packs

    NEW weather-resistant hiking backpacks with body mapping mesh, versatile pockets, and multiple adjustment points for on the trail comfort

    TETON Sports Lifetime Warranty: Image shows four friends hanging out around a campfire, laughing together. They are surrounded by red rocks and there is TETON Mountain Ultra tent in the background.

    Built TETON Tough

    Our Lifetime Warranty

    All of our products are backed by a limited lifetime guarantee. Our products are built to withstand whatever nature throws at you, but rest assured, our warranty will help get your gear repaired or replaced if anything goes wrong.

    Product Reviews

    4.5
    Rated 4.5 out of 5 stars
    Based on 20 reviews
    Total 5 star reviews: 12 Total 4 star reviews: 7 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
    95%would recommend this product
    20 reviews
    • EB
      Eric B.
      Verified Reviewer
      I recommend this product
      Rated 5 out of 5 stars
      Mar 23, 2024
      Great bag - just learn how to use the bag.

      This is a great sleeping bag. Huge! Super soft and nice and warm. Plenty of room to move around in.

      I see lots of people with problems putting it back in its storage bag - once you understand it’s called a stuff bag you’ll figure it out. Literally just start stuffing it into the bag with one free hand. You don’t fold it or roll it. Just stuff it in and keep going till it’s done. Relatively easy and quick. Then cinch it tight and it’s perfect.

    • JO Profile picture for Jessica O.google logo
      Jessica O.
      Verified Reviewer
      Rated 3 out of 5 stars
      Mar 22, 2024
      Doesn’t fit in its bag

      This is a great sleeping bag but it doesn’t fit in its case which is a disappointing design flaw.

      TETON Sports
      Mar 22, 2024

      Thank you for sharing your feedback! We're sorry to hear you're having trouble with the stuff sack. We assure you that the sleeping bag is designed to fit; it might just take a bit of technique and practice. For assistance, we have instructions and a video demonstration on how to properly stuff your sleeping bag back into its sack. Our Customer Experience team would be happy to provide you with these resources and any further assistance you might need. Please don't hesitate to reach out to them at info@tetonsports.com.

    • RA
      Rawaz A.
      Verified Buyer
      I recommend this product
      Rated 5 out of 5 stars
      Mar 6, 2024
      Great quality

      Been looking for a good quality sleeping bag where I can move around in it and not be mummified. This is the one. You can’t go wrong with anything Teton makes! Def recommend this bag. The only thing I wish companies do is make the bag bigger so I don’t have to wrestle a bear putting it back

    • DA
      david a.
      Verified Buyer
      I recommend this product
      Rated 5 out of 5 stars
      Feb 29, 2024
      BIG!

      Looks nice and feels very comfortable. This is convenient for most of my camping and hunting trips as far as base camp goes. I really like not being crowded in a mummy sleeping bag.

    • DS
      Daniel S.
      Verified Buyer
      I recommend this product
      Rated 5 out of 5 stars
      Dec 3, 2023
      Gift

      We already had a double bag, absolutely love it. Decided to get this for wedding gift to brother, he loves it too.

    • JR
      James R.
      Verified Buyer
      I recommend this product
      Rated 5 out of 5 stars
      Sep 25, 2023
      Cozy

      The Mammoth 20 is a awsome sleeping bag for 2. There is plenty of room for 2 adults and a dog! lol

    • C
      Crystal
      Verified Reviewer
      I recommend this product
      Rated 5 out of 5 stars
      Jun 18, 2023
      Super warm!!

      We absolutely love this bag. It kept us so warm up in the mountains in Utah. The sleeping bag fit back in the bag the first time trying. All we did was stuff it in without folding it at all. Great purchase and so happy with it. All we missed out on was the Sale price of $50 less!

    • GK
      Greg K.
      Verified Buyer
      I recommend this product
      Rated 4 out of 5 stars
      Jun 10, 2023

      I used the sleeping bag in 30 temperatures and it was very warm. The problem I had was putting it in the storage bag. It may be impossible the storage bag needs to be bigger

    • T
      Tyler
      Verified Buyer
      I recommend this product
      Rated 4 out of 5 stars
      May 10, 2023
      Good bag, will not fit in it's case

      Overall we enjoy the sleeping bag, however, once the bag is outside of it's case (which is quite a struggle to remove in the first place) it will never, and I mean NEVER go back inside, so be prepared to forever have an oversized sleeping bag taking up way too much space somewhere in your home or garage. I recommend buying a tote to put it in, as the case that comes with it is far too small. Also plan on getting creative when it comes to compressing and maintaining compression when attempting to stow it, as some sort of straps, rope, etc will be required. Otherwise it will just immediately fill with air and resume it's jumbo size. Sleeping in it is great though. If space is not an issue, I recommend.

    • P
      Preston
      I recommend this product
      Rated 5 out of 5 stars
      Apr 6, 2023
      5 Stars

      It’s a great double sleeping bag

    Reviews LoadedReviews Added

    Questions & Answers

    TETON Story & Values: Image shows three backpackers standing atop a large boulder. They are wearing TETON Sports backpacks and are staring away from the camera at a large mountain in the distance.

    Enjoy Life Outdoors

    We believe the outdoors is there for everyone to enjoy. Whether you're blazing a new trail or just want to add a little fresh-air time to your hectic schedule, the outside world is waiting for you. We make the gear that will get you there.