Mammoth 0˚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 0˚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): | 28" x 16" x 16" |
| Pack Weight: | 16.5 lbs. |
| Storage Method: | Compression Sack |
| Temperature Rating: | 0F / -18C |
| 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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Product Reviews
- KKKaren K.Verified ReviewerRated 4 out of 5 starsNov 24, 2023Huge and warm!
I panic-ordered this bag when I realized that our Thanksgiving camping trip was going to be *cold*. It is *massive* -- truly queen sized -- and a bit on the hefty side (as the specs say, it's over 15lbs). Still, it was quite warm and very roomy for myself (5'6") and my husband (6'2"). He is an especially restless sleeper when we camp, and he had plenty of room to toss and turn without affecting me.
The only issue really is that it's nearly impossible to get back into the compression bag. It took the two of us a half-hour and two bungee-style straps, and you can see in the photo how far we got.
TETON SportsNov 27, 2023Thank you for taking the time to review our product! It sounds like the sleeping bag was a great fit for your Thanksgiving camping trip, offering both warmth and ample space. Regarding getting it back into the compression bag, it can take some practice and two people! From your pictures, it seems you tried rolling the sleeping bag, which is a bit tricky. The best approach is actually not to roll it, but to fold the sleeping bag in half lengthwise and then stuff it directly into the bag. We have a helpful video on our YouTube channel demonstrating this method.
If you need more guidance, our Customer Experience team is always ready to assist. Feel free to reach out to them, and they'll be happy to walk you through the process. Thanks again for your feedback, and we're thrilled you enjoyed your camping experience! - DPDan P.Verified BuyerRated 4 out of 5 starsOct 7, 2023Nice - But Can't Pack It Up
My wife and I shared this sleeping bag in the mountains recently when the temperatures dropped to the high 30s in the morning hours. The bag is very thick, warm, and comfortable with soft fleece inside - so far so good.
In case you didn't realize, this sleeping bag is huge, more than double the size of two mummy-style sleeping bags. But when we needed to stuff it back into its stuff sack, fuggetaboutit! It's almost impossible to stuff inside. I suspect the root cause is that the man made loft won't compress as tightly as down. You've heard of the expression "trying to stuff ten pounds of **** into a five pound sack?" Well, the expression takes on a new (literal) meaning here. With my wife's help we finally stuffed it back in the sack after 20 strenuous sweaty minutes.
Back home I opened it up and aired it out, but the problem remained. What to do? Others have written about getting a larger stuff sack, but the current (stuffed) stuff sack is already huge, and we didn't want to create yet a bigger monster.
The (sort-of) answer to the stuffing problem for us was tie-down straps. We got four straps off Amazon and trussed up the bag like a Thanksgiving turkey. It still took two people, but we were able to strap up the sleeping bag, then stuff it into the stuff sack in about half the time and half the cursing. It's still a drag and still a job for two people, just a little faster now.
The first picture shows the strapped sleeping bag. The second picture shows it inside the…
TETON SportsOct 9, 2023Thank you for sharing your experience! We appreciate the feedback. For some helpful tips on packing the Mammoth, we have a video on our YouTube channel that should help! It seems you've also found a creative solution – well done! Happy Adventuring!
- CDCandida D.Verified BuyerRated 5 out of 5 starsNov 24, 2023best sleeping bag ever
This sleeping bag is amazing. Fits two adults comfortably, and can squeeze in a small child during colder nights. My three kids (ages 7 and under) can all fit in together and they love it. Keeps everyone toasty warm.
- THTim H.Verified BuyerRated 5 out of 5 starsNov 21, 2023Wonderful sleeping bag
I haven't tried out its limits yet, but this bag is just slightly smaller than our queen size bed. Honestly I got it so I would have more room on solo car-camping trips, now I've just got to get out there.
The only negative I can find is how hard it is to put back into the bag. I wish the bag was a little bit bigger to restuff this fluffy bag back in, then use the compression straps to shrink it back down some.
- CMChris M.Verified BuyerRated 5 out of 5 starsNov 14, 2023exceeds standards
very warm
- CLCharles L.Verified BuyerRated 5 out of 5 starsNov 7, 2023FIVE STARS ⭐️⭐️⭐️⭐️⭐️
AWESOME SLEEPING BAG 👍
- PMPeter M.Verified BuyerRated 5 out of 5 starsOct 21, 2023Super warm
Super warm and comfortable. Great for car camping. A bit too heavy to hike with but perfect for a drive up campsite.
- CJCharity J.Verified BuyerRated 4 out of 5 starsOct 16, 2023Great and comfortable sleeping bag
Great bag with fast shipping but couldn’t give 5 stars due to the fact that you can not get the sleeping bag back into the storage bag.
TETON SportsOct 17, 2023Hello, Thank you for taking the time to write a review about this product! I am also sorry to hear you are having a hard time putting the bag into the stuff sack. Please feel free to reach out to our customer experience team at info@tetonsports.com and they will be happy to provide you with instructions about how to stuff the sleeping bag into the storage bag. If you have additional questions, feel free to reach out, we are here to help you!
- DNDenton N.Rated 5 out of 5 starsSep 28, 2023Prefect 2 person bag, don’t worry about the stuff sack
I started by jamming the bottom corner of the sleeping bag in the bottom of the stuff sack. Stuff the bag by working in a five point circle, (side, side, side, side, center). Be sure to stuff as much as you can as you go. I had no problem getting the sleeping bag back in the sack but I can see how it can be intimidating, don’t let it prevent you from purchasing this great sleeping bag.
- AFAl F Q.Verified BuyerRated 3 out of 5 starsSep 23, 2023Sleeping bag 5 star. Stuff sac 1 star.
This is a comfortable and warm sleeping bag for car camping or even hanging out in the living room. I like that you can separate the two sides and use them as separate blankets. The sleeping bag is hefty, but it will definitely keep you warm.
My only issue is the stuff sac that is provided. It is a workout trying to get the sleeping bag back in. I know they have videos showing it can be done but it is also done by employees or people who camp often. I relate it to someone who’s never shot a basketball before struggling to make a basket and a basketball player coming along saying it’s easy. All you have to do is this. The stuff sac seems too small for the size of the sleeping bag. After an hour and a half or so of trying I finally got it back in but it took many tries, a few calls to customer service for help, and a lot of sweat. From my understanding there is a larger stuff sac available for purchase but I don’t see why I it didn’t come with it in the first place considering a ton of people are having trouble with the current one.
In the end, don’t let the 3 star discourage you from getting this sleeping bag. I still recommend it for couples, those with kids, or those who want extra space. I just have to take into consideration the default system as a whole and the default stuff sac isn’t that good.
TETON SportsSep 26, 2023Thank you for taking the time to leave such a detailed review! It's great to hear that you're enjoying the comfort and warmth of the sleeping bag. We designed the stuff sack with space-saving in mind. However, we recognize that it may not be the perfect fit for everyone, so offer a larger stuff sack. Your feedback is incredibly valuable to us, and we appreciate you sharing your experience.
Questions & Answers
