Mammoth 20˚F Double Sleeping Bag
Through 9/30 only, save BIG with this end-of-season gear deal.
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 20° to 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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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
- 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.
- WLWatermelon L.Verified BuyerRated 5 out of 5 starsJan 20, 2023The best sleeping bag you can imagine
Supreme design, quality and comfort! TETON Sports excels the whole way around in crafting this remarkable sleeping bag!
- BSBrian S.Verified BuyerRated 4 out of 5 starsDec 9, 2022Sleeping bag
The sleeping bag is magnificent - the shipper (FDX) is not. Give the purchaser the choice of using FEDEX or UPS.
FedEx is terrible is this part of Michigan
- MMelissaVerified ReviewerRated 5 out of 5 starsNov 8, 2022HIGHLY Recommend
The 2 person Teton Sports Mammoth Sleeping Bag is so comfortable! Its spacious enough for both me & my 1O month old Male 1OO+ lbs Rottweiler to sleep in & still have room to turn over, its nice that while laying on the Mammoth Sleeping Bag that its got enough layers that not only keep you warm but enough that it cushions your body from the hard ground. The mummy hood on the sleeping bag is a nice handy feature to the sleeping bag, especially during the Fall or Winter season when its raining like your in the Amazon. The bag being waterproof leaving you dry or when its snowing as if your in the east arctic circle still keeping you warm even if its -O degrees outside. I highly recommend this sleeping bag to literally everyone, for Family outings, going hiking with or without your dog or if you have come upon hard times and are houseless. This sleeping bag is well worth it!
- JHJared H.Verified BuyerRated 5 out of 5 starsOct 14, 20215 Stars
A fabulous bag. Can easily fit two adults or an adult and two children. We took it out of the sack and let if fluff up with air for a few hours and then returned it to the sack. We did this just to see what all the fuss was about concerning the difficulties people have returning the sleeping bag to it's sack. Re-packing our bag took about 55 seconds. Don't let the negative comments concerning this issue dissuade you from buying this sleeping bag. It's perfect for car camping. You'd never consider this for backpacking but that's not what it's designed for anyway. It's massive. They have videos on YouTube that go over all aspects of the item.
Thanks Teton!
- YGYves G.Verified BuyerRated 4 out of 5 starsJun 19, 20214 Stars
Great sleeping bag very confortable and fluffy . but it's impossible to put in its bag when it is out. A larger bag will be ' great plus.
- JNJENNIFER N.Verified BuyerRated 4 out of 5 starsMay 22, 20214 Stars
This bag is super warm, I live full time in a poorly insulated. RV traveling the country. Have been trying to figure out what the extra hook and loop closure are supposed to be used for. I get that part of it let's you have a bit more room around the shoulders. There are extra bits I'm not able to figure out and it's not shown on the website. Help please?
- GGrantVerified BuyerRated 4 out of 5 starsApr 27, 20214 Stars
Super comfortable bag and plenty of room for a tall guy like me. The only downside is the stuff sack is too tight, it takes a small army to pack this up.
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