Mammoth 20˚F Double Sleeping Bag
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.
More details about the Mammoth 20˚F Double Sleeping Bag:
| Best Use: | Camping |
| Sizing Note: | TETON's extra cozy sleeping bags are often bulkier than customers expect. This sleeping bag is considered oversized, and is great for camping by your car or RV, but won't work for backpacking. |
| Material Overview: | Polyester Taffeta, Polyester Flannel, and SuperLoft Elite Single Channel Hollow Fiber |
| Zipper Type: | Two-way U-Zip means you can unzip completely to make two camp comforters |
| Shell Material: | Polyester Taffeta |
| Liner Material: | Polyester Flannel |
| Fill Material: | SuperLoft Elite Single Channel Hollow Fiber |
| Dimensions (in use): | 94" x 62" |
| Dimensions (stored or packed): | 27" x 14" x 14" |
| Pack Weight: | 14 lbs |
| Storage Method: | Compression Sack |
| Temperature Rating: | 20F / -7C |
| A Note About Temperature Ratings: | Most of our sleeping bags list an extreme rating. Because of this, it’s important to consider your sleeping preferences when selecting a bag. If you like things toasty, we recommend adding 30° degrees to the listed temperature rating when selecting a bag. For help selecting the perfect bag, contact us. |
| Country of Origin: | China |
| Care Instructions: | Learn how to care for a TETON sleeping bag. |
| For California Residents: | Prop 65 Warning |
Please note: We do not ship to P.O. boxes. Please provide a physical shipping address when checking out.
We ship from our warehouse in Salt Lake City, Utah via various methods, including USPS and FedEx. If an item is available for sale, it is in stock in our warehouse and will ship as soon as the payment processes, usually within 1 business day of your order.
Once shipped, orders typically take approximately 3 to 5 business days to arrive.
Standard shipping is free for orders $75 and above—after discounts are applied and before taxes and shipping are calculated—to destinations in the continental 48 US states.
When you place an order, you will get a confirmation email. Once your order has left our warehouse, we will email your tracking information to you. Your carrier can give you an estimated arrival date. Most carriers provide step-by-step updates if you request them.
Express shipping is available via FedEx. Rates are calculated by package weight and destination. These options and their rates will be available during checkout.
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Product Reviews
- EBEric B.Verified ReviewerRated 5 out of 5 starsMar 23, 2024Great 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.
- JOJessica O.Verified ReviewerRated 3 out of 5 starsMar 22, 2024Doesn’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 SportsMar 22, 2024Thank 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.
- RARawaz A.Verified BuyerRated 5 out of 5 starsMar 6, 2024Great 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
- DAdavid a.Verified BuyerRated 5 out of 5 starsFeb 29, 2024BIG!
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.
- DSDaniel S.Verified BuyerRated 5 out of 5 starsDec 3, 2023Gift
We already had a double bag, absolutely love it. Decided to get this for wedding gift to brother, he loves it too.
- JRJames R.Verified BuyerRated 5 out of 5 starsSep 25, 2023Cozy
The Mammoth 20 is a awsome sleeping bag for 2. There is plenty of room for 2 adults and a dog! lol
- CCrystalVerified ReviewerRated 5 out of 5 starsJun 18, 2023Super 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!
- GKGreg K.Verified BuyerRated 4 out of 5 starsJun 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
- TTylerVerified BuyerRated 4 out of 5 starsMay 10, 2023Good 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.
- PPrestonRated 5 out of 5 starsApr 6, 20235 Stars
It’s a great double sleeping bag
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