Mammoth 0˚F Double Sleeping Bag
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Mammoth 0˚F Double Sleeping Bag
Green & Tan
4882 Wiley Post Way
4882 Wiley Post Way
Salt Lake City UT 84116
United States
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.
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 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.
All styles & options from this product family:
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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
- WWilliamVerified BuyerRated 4 out of 5 starsJan 15, 2024Really warm
Really good sleeping bag especially for two people but like everybody else on the reviews it’s a pain to pack it in the bag if anybody has any good ideas on how you’re supposed to pack it or is there a video that customer service can send us or make it would be really appreciated on how to pack it correctly Otherwise really great product.
- SSShad S.Verified BuyerRated 5 out of 5 starsDec 17, 2023So comfortable!
Couldn't wait to get to a campground so the day it arrived we pitched a tent in the backyard. Temps reached the high 30s and we could not have asked for it to be any warmer in this bag. Its fill is deep adding a ton to it's comfort. It's huge, so we intend to only use it when we are parked near by, I guess we could hire a sherpa to carry it for us backpacking, lol! Seriously looking for our first real adventure with it, possibly snow, now that we have gear for every time of the year, Thank you Teton!
- 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.
TetonNov 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…
TetonOct 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!
- ASAsclepius S.Verified ReviewerRated 4 out of 5 starsSep 22, 2024Warm as burnt toast
Warm and cozy fluffiness will keep you warm. The warmest synthetic-filled double bag you'll find. Works great for 2 light weight adults. A bit tight for 2 middle weight adults, unless they are really in love.
Unfortunately, you cant zip up the two halves separately to make 2 singles. Pity, for if they used a single zipper on each half, this would get 5 stars for me. But it's good enough for me to buy another one right now. My wife and I have grown too...prosperous to be classified as middle weights, so we need another bag.
- KKevinRated 5 out of 5 starsSep 20, 2024Great bag. Don’t roll it!
Very comfortable and warm bag. The large size is awesome.
When you go to store it, DO NOT roll it up first, just stuff it in the sack — no problem. That’s why it’s called a STUFF SACK!
- MJMike J.Verified BuyerRated 5 out of 5 starsJul 17, 2024Marriage saver
My wife LOVES it. and with dual zippers, I can throw a leg out to cool off when too warm. She used to be so cold every trip. Now she is warm as toast.
I can get it back into the bag, but it is not easy.
- JJudyVerified ReviewerRated 5 out of 5 starsMar 30, 2024GREAT bag, GREAT job Teton!
I may have bought this from a different website at a bit of a discount last year BUT I've used it a handful of times since and each time I'm either too hot or nice and warm all through the night. Camping in CA and now Oregon. Northern Oregon in February is still pretty cold but we were fine and had had to peel off a layer during the night. I say buy the bag if you're needing extreme warmth. You won't be disappointed unless buying an additional oversized canvas bag for storing causes you alarm cuz you won't be able to stuff the bag back into the original stuff sack without a lot of grief.
- ACAndrew C.Verified BuyerRated 5 out of 5 starsMar 7, 2024Big on comfort and warmth
This thing is comically large. You could fit an entire family in here. It's also super flexible - the two sides completely unzip and can become massive blankets. Or, if you're like me and don't mind not having a fully enclosed bag, can be used as two separate sleeping bags. I've used just one half as my own bag on a solo trip and it worked great. The zippers, however, can be finicky and hard to zip at times, but it's not the end of the world. Overall, a great winter sleeping bag for car camping, that can be stretched into the shoulder seasons if you unzip it. Way too overkill for summer, though, but that's not it's purpose.
- RPRichard P.Verified BuyerRated 5 out of 5 starsMar 1, 2024Double bags
Love your bags, gave as a wedding gift and they loved it.
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