Best Extreme Cold Weather Mummy Sleeping Bags


Our review process

We've compared more than 800 sleeping bags, including plenty of different extreme cold weather mummy sleeping bags. We used our progressive machine learning technology to rank each individual sleeping bag based on several data parameters. These features range from the temperature rating and the number of seasons to cleaning options and designs. The following article will discuss extreme cold weather mummy sleeping bags in particular, of which we found 32. We hope that this guide will help you pick the best one for you.

There's lots to learn about sleeping bags, so we've taken a look at extreme cold weather mummy sleeping bags to let you know all about them. These sleeping bags weigh less than rectangular bags, so they are best when you need maximum warmth and minimal weight. However, they provide less space to move around, making them uncomfortable for sleepers who toss and turn. An advantage is that they are good for cold weather, so they are designed to hold in warmth and seal out drafts.

Extreme cold weather sleeping bags come with zoned insulation, which concentrates insulation at the top of the sleeping bag to seal in body heat. They prevent any heat loss, so your kids can have a successful winter excursion. These sleeping bags are commonly designed with a draft collar, keeping the warm air around your torso in and cold air out. They feature draft tubes, which run behind the zipper to help prevent warm air from escaping. Typically made with feather down, they will compress down easily, while still being providing excellent thermal insulation.

Our Top Ranking Sleeping Bags:
Product NameBrandWeightTemperature Rating
Best Overall Score
1
An image of Western Mountaineering Lynx Gore Windstopper Sub Zero Degree Down Sleeping Bag
Western Mountaineering Lynx Gore Windstopper Sub Zero Degree Down Sleeping Bag
Western Mountaineering
3.8
sub zero degree
Runner Up
2
An image of Marmot Never Summer 0 Degree Nylon Sleeping Bag
Marmot Never Summer 0 Degree Nylon Sleeping Bag
Marmot
3.35
0 degree
For Backpacking
3
An image of Alps Mountaineering Desert Pine 0-Degree 4652023 0 Degree Sleeping Bag
Alps Mountaineering Desert Pine 0-Degree 4652023 0 Degree Sleeping Bag
Alps Mountaineering
5.63
0 degree
Best Affordable Option
4
An image of Alps Mountaineering Crescent Lake 4552322-Parent 0 Degree Sleeping Bag
Alps Mountaineering Crescent Lake 4552322-Parent 0 Degree Sleeping Bag
Alps Mountaineering
5.48
0 degree
5
An image of Western Mountaineering Sub Zero Degree Sleeping Bag
Western Mountaineering Sub Zero Degree Sleeping Bag
Western Mountaineering
3.5
sub zero degree
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Western Mountaineering
Weight
3.8
Temperature Rating
sub zero degree
Customer Rating
Brand
Marmot
Weight
3.35
Temperature Rating
0 degree
Customer Rating
Brand
Alps Mountaineering
Weight
5.63
Temperature Rating
0 degree
Customer Rating
Brand
Alps Mountaineering
Weight
5.48
Temperature Rating
0 degree
Customer Rating
Brand
Western Mountaineering
Weight
3.5
Temperature Rating
sub zero degree
Best Overall Score
An image of Western Mountaineering Lynx Gore Windstopper Sub Zero Degree Down Sleeping Bag

If you want to get a good night's sleep while taking on the outdoors, you'll want to learn all about the Western Mountaineering Lynx Gore Windstopper Sub Zero Degree Down Mummy Sleeping Bag. This Western Mountaineering sleeping bag features a down lining, lasting for many years with the proper upkeep. It has a mummy shape, which is larger on top and more fitted on the bottom, keeping warm air inside the sleeping bag. This sleeping bag has a compressible design and is made to be compact, helping you get rid of bulk. Featuring a lightweight build, it is great if you're planning on trekking or hiking long trails by foot. It is made with Gore Windstopper™ fabric, so you will keep warm in windy conditions as this sleeping bag is insulated with windproof technology. Withstanding sub-zero degree temperatures, it can seal in warmth even on the most frigid nights.

    Pros
    • Folds up compactly
    • Features a compressible design
    • Lightweight construction
    Cons
    • Down needs special cleaning care
    • Mummy shape limits different sleeping positions
Runner Up
An image of Marmot Never Summer 0 Degree Nylon Sleeping Bag

Choose the Marmot Never Summer 0 Degree Nylon Mummy Sleeping Bag to stay warm in the outdoors. Featuring a mummy shape, this Marmot sleeping bag is fitted to prevent warm air from escaping. It is designed with a nylon lining and has a nylon ripstop exterior, resisting wear and tear. This sleeping bag has Down Defender, protecting down from clumping when exposed to wet weather. Great for summer, it is extremely thin and airy since it doesn't require the same amount of insulation as winter or 3 season sleeping bags. It includes an interior pocket, so you will have a place to conveniently store your small essentials, such as a phone or a watch. This sleeping bag is waterproof and features a 0°F temperature rating, preventing any cold drafts from keeping you up at night.

    Pros
    • Nylon lining will stay at a comfortable temperature
    • Nylon ripstop exterior is light and comfortable
    • Ventilated properly for warm summer temperatures
    Cons
    • Nylon pills with excess washing
    • Mummy shape limits different sleeping positions
For Backpacking
An image of Alps Mountaineering Desert Pine 0-Degree 4652023 0 Degree Sleeping Bag

Let's review the Alps Mountaineering Desert Pine 0-Degree 0 Degree Mummy Sleeping Bag, a popular choice among online shoppers. With a mummy shape, this Alps Mountaineering sleeping bag is tight fitting to prevent warm air from escaping. Perfect for hiking, it won't weigh you down while you're taking on the outdoors. It detaches via zippers, so you can easily transform your double bag into two individual ones. This Alps Mountaineering sleeping bag has a mummy-style hood, which fits tightly over your head, helping keep you warm by trapping body heat. Suitable for temperatures as low as 0°F, it can keep out icy drafts from the inside of your sleeping bag.

    Pros
    • Mummy-style hood provides added cushion by the head
    • Mummy shape has great insulation
    • Backpacking sleeping bags are light enough to carry on your back
    Cons
    • Mummy shape has a tight fit which can be too cramped for some
Best Affordable Option
An image of Alps Mountaineering Crescent Lake 4552322-Parent 0 Degree Sleeping Bag

Looking for an affordable sleeping bag? You'll want to know about the Alps Mountaineering Crescent Lake 0 Degree Mummy Sleeping Bag. With a mummy shape, this Alps Mountaineering sleeping bag is fitted to prevent cold air pockets. Withstanding 0°F temperatures, it can prevent any icy drafts from keeping you up at night. It is made for backpacking, so if you don't want to carry a lot of weight this could be a great choice for you. Featuring a compact design, it cuts down the total volume of your bag. It features a mummy-style hood, which fits tightly over your head, helping keep you warm by trapping body heat.

    Pros
    • Folds up compactly, getting rid of the bulk
    • Mummy-style hood traps body heat
    • Mummy shape is great for hiking
    Cons
    • Mummy shape doesn't have extra space to move around
Additional Picks
An image of Western Mountaineering Sub Zero Degree Sleeping Bag

If you want to get a good night's sleep while taking on the outdoors, you'll want to learn all about the Western Mountaineering Sub Zero Degree Mummy Sleeping Bag. Featuring a mummy shape, this sleeping bag is tight fitting to prevent warm air from escaping. It is waterproof and can withstand sub-zero degree temperatures, providing an extreme layer of insulation between you and the cold outside. This Western Mountaineering sleeping bag features Microlite XP™ microfiber, which is very breathable, lightweight, and resistant to water, with a thread count of over 400 threads per square inch.

    Pros
    • Mummy shape is great for backpacking
    • Intended for one sleeper, making it an excellent space-saving choice
    • Microlite XP™ microfiber, which is water-resistant
    Cons
    • Mummy shape is very fitted with no extra room to move around
An image of Outdoor Vitals Summit 0 Degree Down Sleeping Bag

Use the Outdoor Vitals Summit 0 Degree Down Mummy Sleeping Bag to stay warm in the outdoors. With a mummy shape, this Outdoor Vitals sleeping bag is fitted to prevent warm air from escaping. It has a down lining, which is very strong, and when taken care of, can usually last up to a decade. Suitable for temperatures as low as 0°F, this Outdoor Vitals sleeping bag can prevent any cold drafts from keeping you up at night.

This Outdoor Vitals sleeping bag works well for camping trips and is lightweight, making it great if your number one priority is low volume and weight. It is made to be compact and features a compressible design, giving you enough extra space to bring along your other gear. This Outdoor Vitals sleeping bag features a zipper guard, preventing the fabric from snagging when opening and closing the zipper. The hood has drawstrings, which allows you to adjust the fit depending on the weather and your own preference. This sleeping bag has a compression bag, which will make storing your sleeping bag very easy.

    Pros
    • Folds up compactly, getting rid of the bulk
    • Designed to compress easily
    • Zipper guard prevents the fabric from catching
    Cons
    • Down loses loft when wet
    • Mummy shape restricts different sleeping positions
    • Camping sleeping bags are not suitable for backpacking
An image of Slumberjack Boundary 0 Degree Polyester Taffeta Sleeping Bag

With the Slumberjack Boundary 0 Degree Polyester Taffeta Mummy Sleeping Bag, you can experience an incredible night's sleep while on your trip. This sleeping bag has a polyester taffeta lining, which does not retain water, and dries out quickly if it comes in contact with water. It has a mummy shape, which is larger on top and more fitted by the feet, keeping warm air close to your body. Featuring a 0°F temperature rating, it can keep out cold drafts from the inside of your sleeping bag. This sleeping bag comes with a stuff sack, which will keep your pack organized.

    Pros
    • Stuff sack will keep you organized
    • Polyester taffeta lining is UV-resistant
    • Mummy shape is great for backpacking
    Cons
    • Mummy shape is close fitting with no extra space to move
    • Stuff sack can ruin the sleeping bag's filling after prolonged use
An image of Alps Mountaineering 0 Degree Polyester Sleeping Bag

Trying to find a great camping sleeping bag? You'll want to hear all about the Alps Mountaineering 0 Degree Polyester Mummy Sleeping Bag. With a mummy shape, this sleeping bag is tight fitting to prevent warm air from escaping. It can withstand 0°F temperatures, preventing any icy drafts from keeping you up at night. This Alps Mountaineering sleeping bag has a polyester lining, which is breathable and soft on your skin and doesn't heat up as much as other fabrics once you're inside, and a polyester shell, which resists UV light, preventing the color from fading. It features Techloft silver insulation, which utilizes tiny, silicone-coated, micro-denier fibers that increase insulation, comfort, and compactness. This Alps Mountaineering sleeping bag is designed for camping and is lightweight, making long days out on the trail easier to handle. Featuring a compressible design, it will not take up all of the usable space in your backpack so you will have sufficient room to bring along other essentials.

    Pros
    • Features a compressible design
    • Lightweight construction
    • Polyester lining is strong and colorfast
    Cons
    • Polyester can get dirty easily
    • Mummy shape doesn't have extra space to move around
    • Camping sleeping bags are not suitable for backpacking
An image of Kelty Cosmic 35413516LR 0 Degree Sleeping Bag

Choose the Kelty Cosmic 0 Degree Mummy Sleeping Bag to stay warm in the outdoors. With a mummy shape, this Kelty sleeping bag is fitted to prevent cold air pockets. It has a 0°F temperature rating, preventing any icy drafts from keeping you up at night. This Kelty sleeping bag is equipped with a zipper guard, keeping the fabric from getting caught in the zipper. It features Dridown technology, which uses many short fibers to properly trap heat, while giving off a silky feel that is very comfortable.

    Pros
    • Zipper guard prevents the material from catching
    • Mummy shape has excellent insulation
    • Dridown technology
    Cons
    • Mummy shape limits different sleeping positions
An image of Snugpak Softie Antarctica 20106200611 0 Degree Sleeping Bag

Let's review the Snugpak Softie Antarctica 0 Degree Mummy Sleeping Bag, rated highly by online shoppers. This sleeping bag has a mummy shape, sealing in your body heat since it is very fitted. With a compressible design, it does not take up all of the usable space in your backpack so you will have sufficient room to bring along other essentials. Withstanding 0°F temperatures, it can keep out icy drafts from the inside of your sleeping bag. It is equipped with a zipper guard, keeping the material from getting caught in the zipper. This Snugpak sleeping bag comes with a two-way zipper, which increases airflow by your feet or upper torso if opened from either the top or bottom, and a stuff sack, which will keep you organized.

    Pros
    • Features a compressible design
    • Zipper guard prevents the fabric from snagging
    • Two-way zipper provides airflow by their feet
    Cons
    • Mummy shape has a tight fit which can be too cramped for some
If You Need Help Making Your Choice, Here's Some Additional Information About Extreme Cold Weather Mummy Sleeping Bags:
Figure Out Which Liner Material to Pick for Mummy Sleeping Bags
Polyester Sleeping Bags

Are polyester sleeping bags the best fit for you? Take a look at this particular mummy sleeping bag with a polyester liner that we highly recommend. Polyester sleeping bags are naturally hypoallergenic, so they don't contain harmful substances that can cause discomfort for people with asthma or certain chemical sensitivities. They are made with breathable material, providing you a way to stay comfortable on warmer nights. These polyester sleeping bags are easy to clean, so with just a damp cloth and a little soap you can keep them in great shape. They are designed with durable materials, so they can tolerate extensive use without fraying or falling part. Polyester sleeping bags dry quickly, so when facing wet conditions, moisture will not soak the fabric.

Down Sleeping Bags

Looking for a warm sleeping bag? A sleeping bag with a down liner may be the perfect solution. For your convenience, we recommend one of the great mummy sleeping bags that come with a down liner. Down sleeping bags can be easily compressed, making it perfect if you have a limited amount of space for all your stuff. They are designed to be insulated, preventing any cold drafts from getting in the way of a good night's sleep. They are designed with durable materials to withstand wear and tear. Down sleeping bags are very comfortable, ensuring comfort and rest, so you'll sleep happier than in your own bed. They are designed for warmth, providing you with a cozy space to take on the outdoors. Down sleeping bags are breathable, promoting steady airflow so you don't get too hot. We hope choosing the right mummy sleeping bag will be easier now that you know more about down. You can start by checking out this awesome mummy sleeping bag that we looked at.

Nylon Sleeping Bags

Looking for a warm sleeping bag? A sleeping bag with a nylon liner may be the solution you need. For your convenience, we recommend one of the great mummy sleeping bags that come with a nylon liner. These nylon sleeping bags are easy to clean, so they can go many years before needing a complete wash. They are very soft, ensuring your child sleeps soundly after a long day in the outdoors. They are extremely durable, so they can tolerate extensive use without fraying or falling part. Nylon sleeping bags are designed to be lightweight, so they are ideal for tough terrain backpacking trips or other adventures where weight and volume are a priority. They dry quickly, reducing the overall amount of moisture trapped and absorbed by the material. Now that you know a bit more about nylon, choose the perfect one for you here.

Advantages and Disadvantages of Different Temperature Ratings for Mummy Sleeping Bags
Sub Zero Degree Sleeping Bags

If you're looking for a sub zero degree rating mummy sleeping bag, then you should check out this highly ranked sleeping bag. These sleeping bags are ideal for winter trips outdoors, so they make it really easy for a person to stay comfortable in freezing temperatures. They feature advanced technology like Thermotech insulation, sealing in warmth for taking on the extreme cold. They feature a quick-drying technology, so moisture will not soak the fabric, maximizing thermal efficiency even when wet. They have a tight fitted hood design, so they aren't the best choice if you don't want to feel restricted around the head and neck. Something to keep in mind is that they are generally expensive, so if you won't be using the bag that often, you might want to think about getting a cheaper one. They have an easy access design, so you don't have to struggle with the zipper while dealing with cold weather.

0 Degree Sleeping Bags

If you want a sleeping bag that will stand up to cold weather then 0 degree sleeping bag might be what you want. We compared five mummy sleeping bags that come with a 0 degree temperature rating. 0 degree sleeping bags should keep you comfortable down to 0°F, but remember that this doesn't account for variables such as layering, what you're wearing, and various other factors. They are ideal for winter trips outdoors, so they make it really easy for a person to stay comfortable in freezing temperatures. Featuring advanced technology like Thermotech insulation, they are engineered to provide an extreme layer of insulation between you and the cold outside. Something to keep in mind is that they are generally expensive, so if you won't be using the bag that often, you might want to think about purchasing a cheaper one. A benefit is that they feature an easy access design, which will reduce the amount of unnecessary time spent out in the cold while fussing with the zipper. Now that you know about 0 degree rating sleeping bags, check out this great mummy sleeping bag.