Celsius Mammoth Double 0°F Sleeping Bag
Our newly redesigned Celsius Sleeping Bag leaves ordinary rectangular bags in the rearview with a modern angled baffle pattern and a handful of anything-but-basic hues to match your personal style.
But the Celsius is not just a pretty face—the double-layer construction and innovative fiber fill chase away the chill so you stay snug as a bug long after the sun goes down. We even added a cinchable mummy-style hood for extra warmth (bonus: it also keeps your camp pillow free of crud).
Finally, we streamlined the sizes on our new Celsius Sleeping Bag line to make sure everyone sleeps happy. The Celsius Mammoth double two-person sleeping bag is the same as our previous Mammoth size (94" x 62") and features a durable polyester taffeta shell that's tough and easy to clean.
Camp on the bright side with Celsius.
- Rectangular sleeping bag with mummy hood
- Extreme rating for temperatures as low as 0° F / -18° C
- Full-length shoulder and zipper draft tubes
- Innovative fiber fill for maximum warmth
- Anti-snag zipper and webbing
- Angled baffle pattern with stylish color block design
- Double I-zip zipper design makes an easy entry from either side of the bag
- Interior phone pocket
- Hang loops for easy storage
- Includes durable stuff sack
- TETON Sports Lifetime Warranty
More details about the Celsius Mammoth Double 0°F 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: | 70D Polyester Taffeta, 75D Polyester Flannel, and SuperLoft Elite Single Channel Hollow Fiber |
| Zipper Type: | Double I-zip makes it easy to enter and close from either side of the bag |
| Shell Material: | 70D Polyester Taffeta |
| Liner Material: | 75D Polyester Flannel |
| Fill Material: | SuperLoft Elite Single Channel Hollow Fiber |
| Dimensions (in use): | 94" x 62" |
| Dimensions (stored or packed): | 30" x 16" x 16" |
| Pack Weight: | 15.1 lbs. |
| Storage Method: | Stuff 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.
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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
- DMDevin M.Verified BuyerRated 5 out of 5 starsApr 15, 2024Amazing
Used it for the first time in Ohio, not crazy cold it got to 30 degrees at night, and me and my girlfriend had to open up the bag becuase we got so warm. Amazing sleeping bag
- BBenjaminRated 5 out of 5 starsAug 10, 2023Perfect for couples!
Camping as a couple is usually a bit of a challenge, but sleeping in this bad boy made a huge difference in our quality of sleep! It’s basically queen sized so we had pleeennttyyyy of room to snuggle up. It also wicked away most of the sweat but I’d recomend outing a second sheet between the bag and sleeping bad since a lot of condensation built up underneath. Otherwise we loooved it and would recommend it to anyone needing a bit more space on their next camping trip!
- RFRacheal Feuerbach B.Verified ReviewerRated 5 out of 5 starsAug 9, 2023MAMMOTH IS A MUST!
As someone who has been camping from a young age, I have owned many sleeping bags and can honestly say TETON Sports makes the BEST sleeping bags! This oversized two-person sleeping bag easily fits my 5'8" frame along with my partner and our dog. The plush poly flannel interior invites you to snuggle up for a cozy night of sleep and the cinchable mummy-style hood keeps me warm on those chilly nights. Plus the velcro closures makes sure cold air doesn't sneak inside. I also love the inside pocket that holds my phone or flashlight and the durable exterior holds up nicely to our dog running and jumping on it. It's a perfect addition for anyone who enjoys tent or car camping. Highly recommend this to be an addition for any outdoor enthusiasts!!
- JYJonathan Y.Verified ReviewerRated 5 out of 5 starsAug 7, 2023Perfect Family Bag
This is the perfect family bag. We just wrapped up an unforgettable car camping trip, and I couldn't have asked for a better companion than the Teton Sports CELSIUS MAMMOTH 0°F Sleeping Bag! From the moment we crawled inside, I knew we were in for a cozy night's sleep. The 0°F rating was spot on, as we stayed warm and toasty even when the temperature dropped during the night. The spacious design allowed us to sprawl comfortably, and the soft lining felt like sleeping on a cloud. It's the perfect balance of roominess and insulation for camping adventures! Not to mention, the durable materials and quality construction reassured me that this sleeping bag is built to last. Whether it's a weekend getaway or an extended road trip, the Teton Sports CELSIUS MAMMOTH is a must-have for all campers seeking ultimate comfort and warmth. We embraced the joy of car camping with this fantastic sleeping bag - highly recommended!
- FFTDVerified ReviewerRated 5 out of 5 starsJul 28, 2023Home comfort in the outdoors
Ok first of all this thing really is mammoth! Usually 2 person bags are really 1.25 person bags, but this is truly a 2 person bag. Secondly it is very warm, very soft, and very comfortable, just like wooly mammoths probably were. I've been camping for 10+ years and this bag really hits home for car camping. Highly recommend!
- EWElisa W.Verified ReviewerRated 5 out of 5 starsJul 25, 2023Perfect for families
I got this sleeping bag because I am always worried about my kid’s temperature when we camp and this sleeping bag eases my mind because we are all in one bag and it has a very warm rating.
Other than that this sleeping bag is super luxurious inside. It is so comfortable and squishy. I put it on top of an air mattress this past weekend in RMNP and it felt like sleeping on my bed at home.
- RCRachel C.Verified BuyerRated 4 out of 5 starsApr 8, 2024Great quality
I wish that sleeping bag fully separated in to 2 pieces
- WPWilliam P.Verified BuyerRated 5 out of 5 starsApr 7, 2024The bag worked as expected for us 2 oldies.
Went camping this past weekend in the mountains of NC and the bag kept us toasty. My wife and I are 68 and still love to tent camp. This is our second Teton queen sized bag. The Celsius bag worked well for us and we have no complaints. The interior fabric is soft, comfortable, and warm.
We recommend the bag.
- EAEva A.Verified BuyerRated 5 out of 5 starsMar 11, 2024Amazing bag!
Tons of room and warmth!
- CJCreeker J.Verified BuyerRated 4 out of 5 starsMar 11, 2024Very warm and comfy
Finally had a a chance to try it out for the first time. The night dipped in the upper 20’s and I stayed very warm and comfortable. The construction is good and the zippers are smooth.
Only down fall is the bulk. I had planned on keeping it my rooftop tent but the bag is too big to to allow the tent to close. I order an oversized bag to pack it in. I’d have to be a magician to fit this in the bag it came with.
I would definitely buy this bag again but doubt I will wear it out any time soon.
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