TETON Sports Mammoth 0-Degree Sleeping Bag

by Teton Sports

Product Features

• Comfortable family-sized sleeping bag with a temperature rating of 0 degrees F
• Oversized body holds as many as 2 adults and 1 child or 4 young children
• Soft cotton flannel lining for comfort; adjustable mummy hood for extra warmth
• Interior storage pocket holds wallet, keys, and other valuables; full-length side zippers
• Includes nylon compression sack; measures 94 inches long x 62 inches wide; lifetime warranty

Product Description

Amazon.com Product Description

The perfect bag for any family outing, the Teton Mammoth bag is comfortable, warm, and large enough to accommodate almost any camper--and sometimes even two or three. The Mammoth sports a soft cotton flannel lining with a temperature rating of 0 degrees F, helping campers stay cozy in almost any family camping locale. The bag's shoulder baffle and pair of full-length zipper draft tubes, meanwhile, help keep warmth in and cold out, a must on chilly fall evenings. And campers who really want to insulate will delight in the adjustable mummy hood, which pulls down tight for extra warmth.

But the real attention-getter is the Mammoth's massive size, which can comfortably hold a pair of adults plus one small child, or as many as four young children at once. The large sleeping pocket makes this bag ideal for family trips to the beach, backyard sleepovers, and a ton of other people-intensive situations. Plus, should campers need to get out of the bag without disturbing their partners, they can simply use the full-length zipper on either side to make a quick exit.

Other features include internal storage pockets on both sides for holding keys, wallets, and other valuables and an Oxford nylon compression sack that makes the Mammoth easy to transport and store. The Mammoth measures 94 inches long by 62 inches wide and weighs 17 pounds. It's also backed by a limited lifetime warranty.

Amazon.com Sleeping Bag Guide
Sleep Well: Finding the Right Sleeping Bag
Sleeping bag technology has come a long way from the days of cowboy bedrolls. These days, there are a number of high-tech materials and designs available to keep you warm during the coldest outings. Here's a short list of things to keep in mind when you're shopping for a bag:

Buy for Cold
It's a safe bet that on at least one of your adventures, the nighttime temperature will drop unexpectedly. That's why it's smart to buy a bag that's rated for the lowest possible temperature you expect to face on your camping and backpacking trips. For summer trips, a bag rated at +35 degrees or higher will likely do the trick. If you like to camp in higher elevations in the summer, or if spring and fall outings are in your future, consider bags rated from +10 to +35. Winter adventurers should look for bags in the -10 to +10 range, while those on serious winter alpine climbs and expeditions will want a bag rated lower than -10.

Keep in mind that sleeping bag manufacturers' temperature ratings only estimate the minimum temperature at which the bag will provide warmth. Take these numbers with a grain of salt, as different folks generate different amounts of heat when they sleep. If you're the type who likes to pile on the covers even on warmer nights, go for a bag that's rated ten degrees colder. The opposite is true for "warm" sleepers--a 35-degree bag will probably work for you on a 25-degree night.

Goose or No Goose?
The most important component of any sleeping bag is its insulating material. Modern sleeping bags offer two choices: goose down or synthetic. While both materials have advantages and disadvantages, down bags are considered superior because of their phenomenal warmth-to-weight and warmth-to-bulk ratios. While providing great insulation, down is extremely compressible and light. There's a reason why geese can fly and stay warm through the winter! Down also boasts great long-term durability and will typically retain its insulating properties after years of use.

All of that said, there are many high-quality synthetic bags on the market and synthetic materials are getting better all the time. While a synthetic bag will weigh somewhat more than a down bag at an equivalent temperature rating, synthetic bags perform better when wet. (Yes, the Achilles heel of down is that it loses all insulating properties when wet.) If your trips take you to wet climates, you may want to consider a synthetic bag for this reason alone. Keep in mind, too, that many people are allergic to down--synthetic bags are non-allergenic. Finally, down is considerably more expensive than synthetic, which might tip the balance for adventurers on a budget.

Bags for All Shapes
Sleeping bags come in two basic shapes that reflect their intended use. Mummy-shaped bags offer the best warmth because they conform to the body's contours. This minimizes the amount of body heat the body must put out to maintain a constant temperature. Many mummy bags are offered in women-specific shapes and sizes, as well. Rectangular bags, while they do offer more room to toss and turn, are less thermally efficient because they contain more open air space. Also, they are typically heavier than mummy bags, and are generally not offered with down insulation, making them best suited for car camping or short backpacking trips.

Pad Yourself
No matter what kind of bag you choose, a sleeping pad is a required accessory. Not only do they provide much-needed comfort when sleeping on the ground, pads also offer crucial warmth for your backside, as the weight of your body compresses--and renders virtually useless--the sleeping bag insulation that lies beneath you.

Product Description

The Mammoth is the perfect bag for any family outing. Whether you're going for a weekend at the lake or your in-laws are staying over, the Mammoth is comfortable enough for two (maybe three or four if you have young children). Stash your personal items in the interior storage pocket for safe keeping, and pull the adjustable mummy hood down tight for extra warmth. There are also shoulder and zipper baffles to fight drafts. The oxford nylon compression sack makes this monster bag easy to transport and store. The bag is great for couples and families because of the full length zippers on both sides so you can exit the bag without disturbing your partner. The internal storage pockets on both sides for keys, wallet, watch and other valuables

Product Details

• Item Weight: 20 pounds
• Shipping Weight: 20 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
• ASIN: B000F38YHI
• Item model number: 111
• Average Customer Review: 4.6 out of 5 stars  See all reviews (78 customer reviews)
• Amazon Best Sellers Rank: #5,698 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • #18 in Sports & Outdoors > Outdoor Recreation > Camping & Hiking > Sleeping Bags

Customer Reviews

Most Helpful Customer Reviews

40 of 40 people found the following review helpful:

5.0 out of 5 stars Very warm and cozy!, January 9, 2007

By 

Crystal A. Rodgers "Crystal" (Texas) - See all my reviews
(REAL NAME)   

This review is from: TETON Sports Mammoth 0-Degree Sleeping Bag (Sports)

I do a lot of camping in very cold weather and I'm not exactly a tiny person. Neither is my husband. We both fit in this tent very comfortably being the size we are and in 22 degree weather we were VERY warm in this sleeping bag. It was well worth what we paid for it and then some. Before we got this sleeping bag, we didn't sleep well camping because it would be so cold we would shake all night, but this time other people came out of their tents saying they didn't get a good nights sleep because it was too cold. And we got good sleep!

So, this sleeping bag is wide enough for bigger folk (200+) and warm enough for REALLY cold weather.

Another cool feature it has is this piece that you can pull over your face and head if you want to, and it has this slight indention to where you can still breath, or tunnel as I call it. So your nose and mouth doesn't freeze.

29 of 30 people found the following review helpful:

5.0 out of 5 stars Fanstastic bag for two adults! Inside is soft flannel, thick and fluffy... very very warm in the Montana mountains., July 3, 2009

By 

T. L. Wheeler (Fountain Valley, CA, USA) - See all my reviews
(REAL NAME)   

This review is from: TETON Sports Mammoth 0-Degree Sleeping Bag (Sports)

This is our first "two person bag" and it's great! My husband is 6'6" and he is able to fit in it deep enough to cover completely up. It is roomy enough for us both to move and sleep very comfortably. It is warm, and I mean WARM!! We used it on our recent 18 day camping trip through 6 states and very different climates. In Utah, we didn't even zip it up, it's so warm just as a blanket type set up. In Montana we did challange it's warmth factor, zipped up, and still we were toasty all night long. When we fisrt took it out of the stuff bag it comes in it didn't look like it would fit back in. The trick is to NOT roll it, but just stuff it back in like you would a regular bag. It does fit in the stuff bag, and we stuffed it 18 times on this trip (we move from campground to campground when traveling). the stuff bag has compression straps on it too, but we didn't really use them since we were taking it out and putting it in the stuff bag so regularly. Now that it's stored for a couple weeks at home, we did compress it after stuffing it. But don't kid yourself, this is a large, thick bag, so when stuffed it's pretty good size to transport. We car camp quite a bit more then the average couple and this bag is the best addition to our equipments we've made in a long time, I would recommend to anyone!

20 of 21 people found the following review helpful:

5.0 out of 5 stars worth the price, February 14, 2007

By 

Diane Ho (Seattle, WA) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: TETON Sports Mammoth 0-Degree Sleeping Bag (Sports)

I hesitated buying this sleeping bag due to the price, but my boyfriend insisted on it. We went camping with it this past weekend, and the temperature was around 50 or mid-40's (we were on a beach in southern California), so we didn't exactly test it in extreme temperatures. It was so warm and cozy and definitely kept us warmer than our cheap sleeping bags would have. Actually it was so warm we had to open the sides a little to let air in! Having slept uncomfortably cold nights in a cheap sleeping bag before, this sleeping bag is worth the price for the good night's sleep alone. On our second night camping, it rained pretty hard and we realized our tent was leaking. We patched it with some tape and trash bags, but the inside of the tent was fairly wet. The outer material of the sleeping bag appears to be waterproof, so we were still pretty warm the whole night even though it got a little wet (we brought a spare sleeping bag to pad under the Teton - it was soaked). Now we just need a good tent to go with our awesome sleeping bag!