Mammoth 0 Degree Double Sleeping Bag



  • Three-Side Zipper


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.


-Car camping double sleeping bag
-Rated for cold temperatures
-Sturdy taffeta shell
-Soft-to-the-touch liner
-Mummy style hood
-Double-layer construction entire width and length of bag
-Full-width baffles and full-length zipper and shoulder draft tubes
-Sturdy anti-snag two-way zippers with metal pulls
-Unzip completely to make two camp comforters
-Lifetime Warranty

Specs and Sizing

Primary Features

Size: 94" x 62"
Pack Weight: 16.5 lbs.
Temperature Rating: 0˚F


Shell: Taffeta
Liner: 100% Brushed Poly Flannel
Filler: SuperLoft Elite Hollow Fiber

Storage & Conveniences

Size (packed-not compressed): 28" x 15.75" x 15.75"
Storage: Oxford Stuff Sack with Drawstring Closure

Works Great With

ALTOS Insulated Sleeping Pad

$69.99 View

TETON Sports Mountain Ultra 2 Person Tent

$139.99 View

TETON Sports Mountain Ultra 3 Person Tent

$169.99 View

ComfortLite™ XL Self Inflating Pad

$79.99 View

Customer Reviews

  • Rated 4.57 out of 5 based on 7 customer ratings
  • Mark

    Bag is not the best for car camping, Insulation has low compress-ability, so the bag is HUGE to transport. Also, it’s nearly impossible to fit into compression sack. Unfortunately I waited too long to test fit, so I cannot return. Trying to figure a use for bag. It takes up way too much space in wife’s land cruiser or my 4Runner. Definitely not going on any camping trips unless we tow expo trailer.

    • Sarah Knowles

      Hi Mark, we’re so sorry to hear that this bag is too big for your needs and that you’ve had a hard time with getting it back into the compression sack. Please check out our FAQ for tips to make stuffing the bag into the compression sack easier by clicking here. If there is anything else we can do for you please don’t hesitate to email us at [email protected] and our team will be happy to help. – Sarah K., TETON Sports

  • Robert Rodrigues

    Have had this bag for 4 years now and love it every time. It’s so warm every time we use it. Very soft and still looks like the day we purchased it. Quality is great, very well made. Love the Velcro pieces at the top sides to keep things together. The mummy style hood is great for giving your pillow a place to sit or pull it over for more warmth. Honestly the best sleeping bag I’ve owned, sometimes it’s too warm on cold nights and I end up putting one foot out the side to regulate my body heat. But we also haven’t tried it in 0 degree weather. I think the lowest we’ve used this bag in was 28 degree weather. But worked like a charm.

  • Amy

    I have had this bag for a few years now and absolutely love it. I’ve used it many times and it is still like brand new, so the construction is awesome! It is warm and toasty. The mummy style let’s you cinch the top to keep your head warm on cold nights, and it zips from both top and bottom to let you regulate temp. The material inside of the bag is really soft and comfortable. It is pretty big in size, but I can pack it, and all my camping gear into my small Impreza with no problems. As far as getting it into the stuff sack, i’ve had no problems and I am a woman. I’ve done it by myself plenty of times. This is an awesome bag and one of the best purchases I’ve made for car camping. My boyfriend loves it too.

  • Carlee S.

    We have had our Mammoth Bag for years now and it is still amazing! Warm, comfortable, and lots of room! It does take up a lot of storage space in the car and in the garage but it is worth it!

  • Rebecca Pass

    Ok, so yes… this thing is huge! It was a bit longer than our queen air mattress but width was perfect. My husband insisted on purchasing a double due to the fact I always freeze, granted I love my Teton mummy, too. However, this was the first time I have slept comfortably in autumn/winter camping. Seriously nice to share the space with my better half but the warmth the bag kept in was impressive. Our favorite feature is the adjustable top. It helps keep the pillows from running away and really gets you snuggled in there. Great product!

  • Jeff

    I have only tested this in the house… Getting this back in the stuff sack is possible but you better watch the video posted on the Teton sports website. I felt like I was wrestling a grizzly bear and losing the first time I put this back in the sack. My wife and I were able to do it but it took forever and we were exhausted when it was over. I WATCHED THE VIDEO after leaving a message on the phone with Teton to complain and then pulled it back out of the stuff sack and tried again. I was able to do it by myself in a little over a minute.
    Ok. So we got that out of the way. The bag appears to be of pretty good quality with no noticeable defects other than a few loose threads on seams that didn’t get cut off. They don’t appear like they will be of any issue. I didn’t give it a 5 star because I haven’t tried it camping yet I will come back and let you know what I think after using it out in the cold. Overall I think it will be a great bag especially considering I picked it up for $129 at Sportsman’s Warehouse. It is about the same size as the two individual bags I had when I put them together and my wife and I fit in it very comfortably with lots of room to spare. I hope we are not too warm in it..

  • Robin Grey

    This is the cushiest, coziest sleeping bag I have ever known. We’ve used it when it’s somewhat warm and when it was freezing and were equally comfy. The flannel inside is so soft.

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Lifetime Warranty

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