Best Extreme Cold Weather Sleeping Bags for 2019


Our review process

We've taken a look at over 800 sleeping bags, including plenty of different extreme cold weather sleeping bags. We used our leading machine learning technology to rate each individual sleeping bag based on a number of data points. These features range from the temperature rating and the number of seasons to cleaning options and designs. The following article will talk about extreme cold weather sleeping bags in particular, of which we found 42. We hope that this guide will help you in your pick.

There's loads to know about sleeping bags, so we've taken a look at extreme cold weather sleeping bags to let you know all about both the pros and cons of these types of sleeping bags. These sleeping bags have zoned insulation, maximizing the warmth where it is most needed. They prevent any heat loss, so you can pack lightly, knowing that you won't have to bring tons of extra gear and layers to keep you warm enough. Extreme cold weather 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 the length of the bag 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 NameBrandTemperature RatingWeightShape
Best Overall Score
1
An image of Snugpak Softie 18 20106200211 0 Degree Sleeping Bag
Snugpak Softie 18 20106200211 0 Degree Sleeping Bag
Snugpak
0 degree
Runner Up
2
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
sub zero degree
3.8
mummy
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
0 degree
5.63
mummy
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
0 degree
5.48
mummy
5
An image of Marmot Never Summer 0 Degree Nylon Sleeping Bag
Marmot Never Summer 0 Degree Nylon Sleeping Bag
Marmot
0 degree
3.35
mummy
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Snugpak
Temperature Rating
0 degree
Weight
Shape
Customer Rating
Brand
Western Mountaineering
Temperature Rating
sub zero degree
Weight
3.8
Shape
mummy
Customer Rating
Brand
Alps Mountaineering
Temperature Rating
0 degree
Weight
5.63
Shape
mummy
Customer Rating
Brand
Alps Mountaineering
Temperature Rating
0 degree
Weight
5.48
Shape
mummy
Customer Rating
Brand
Marmot
Temperature Rating
0 degree
Weight
3.35
Shape
mummy
Best Overall Score
An image of Snugpak Softie 18 20106200211 0 Degree Sleeping Bag

Before purchasing the Snugpak Softie 18 0 Degree Sleeping Bag, it's important to know more about its different features. This sleeping bag features a zipper guard, which keeps the fabric from snagging in the zipper teeth. With a compressible design, it packs easily into a backpack or bag. It can withstand 0°F temperatures, preventing any icy drafts from keeping you up at night. This sleeping bag comes with a two-way zipper and a stuff sack, which will keep your pack organized.

    Pros
    • Designed to compress easily
    • Zipper guard prevents the material from catching
    • Stuff sack will keep your bag organized
    Cons
    • Stuff sack can damage the sleeping bag's filling after prolonged use
Runner Up
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 sleeping bag has a down lining, which will add high insulation, standing up to colder temperatures. It has a mummy shape, which is larger on top and more fitted by the feet, keeping warm air closer to you. 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 features Gore Windstopper™ fabric, which protects you from all windy conditions by using a windproof membrane that keeps you warm. 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
For Backpacking
An image of Alps Mountaineering Desert Pine 0-Degree 4652023 0 Degree Sleeping Bag

Choose the Alps Mountaineering Desert Pine 0-Degree 0 Degree Mummy Sleeping Bag to stay warm in the outdoors. With a mummy shape, this sleeping bag is fitted 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 split it into two separate sleeping bags. 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. Made to be compact, it makes packing easy, leaving you with plenty of room for your other gear. 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 Marmot Never Summer 0 Degree Nylon Sleeping Bag

Let's review the Marmot Never Summer 0 Degree Nylon Mummy Sleeping Bag, a popular choice among consumers. 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, which protects down from clumping when exposed to moisture. 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. With an interior pocket, this sleeping bag has a convenient spot to store essentials. It is waterproof and can withstand 0°F temperatures, so you won't feel any cold drafts.

    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
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, ensuring a well-insulated space that allows you to create a warm microclimate with your body heat. 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 is perfect for camping and is lightweight, making it great if your number one priority is low volume and weight. It features a compressible design and is made to be compact, so it can be rolled up small, fitting conveniently wherever you pack it. This Outdoor Vitals sleeping bag features a zipper guard, preventing the fabric from snagging when opening and closing the zipper. The hood has drawstrings, so you can adjust the tightness based on what feels most comfortable to you. 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 a great night's sleep while on your outdoor adventure. 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, sealing in your body heat since it is very fitted. Featuring a 0°F temperature rating, it can keep out cold drafts from the inside of your sleeping bag. It features a stuff sack for easily fitting your sleeping bag into your backpack along with the rest of your equipment.

    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

Let's review the Alps Mountaineering 0 Degree Polyester Mummy Sleeping Bag, a popular choice among online shoppers. With a mummy shape, this Alps Mountaineering sleeping bag is tight fitting to prevent cold air pockets. It features a polyester lining, which is a synthetic material that is very strong and colorfast, and a polyester exterior, which is light and comfortable. Featuring a compressible design, it will not take up all the space in your bag so you will have sufficient room to bring along other gear. This sleeping bag has Techloft silver insulation, which uses tiny, silicone-coated, micro-denier fibers that increase insulation, comfort, and compactness. It is made for camping and is lightweight, making it great for hiking or traveling long distances on foot. Withstanding 0°F temperatures, it can keep out cold drafts from the inside of your sleeping bag.

    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

Let's review the Kelty Cosmic 0 Degree Mummy Sleeping Bag, rated highly by online shoppers. With a mummy shape, this Kelty sleeping bag is fitted to prevent warm air from escaping. It has a 0°F temperature rating, which keeps out cold drafts from the inside of your sleeping bag. This sleeping bag has Dridown technology, which uses many short fibers to properly trap heat, while giving off a silky feel that is comfortable. It features a zipper guard, preventing the fabric from getting caught when opening and closing the zipper.

    Pros
    • Zipper guard prevents the material from catching
    • Mummy shape has excellent insulation
    • Dridown technology
    Cons
    • Mummy shape limits different sleeping positions
If You Need Help Making Your Choice, Here's Some More Information About Extreme Cold Weather Sleeping Bags:
Which Temperature Rating Is Best for Your Sleeping Bags?
Sub Zero Degree Sleeping Bags

Think that sub zero degree sleeping bags are what you're looking for? Then come check this sleeping bag after you finish reading about them. These sleeping bags have a tight fitted hood design, so your neck and head will be enveloped in warmth. They are ideal for winter trips outdoors, so you won't have to pack tons of extra layers or blankets for those cold nights. With advanced technology like Thermotech insulation, they are engineered to deliver outstanding warmth. These sleeping bags are closely fitted, minimizing the amount of air around your body, so there is less overall space to heat up. They have a quick-drying technology, so they are engineered to keep you warm even in the wettest conditions. They feature an easy access design, which will reduce the amount of unnecessary time spent out in the cold while fussing with the zipper. One downside is that sub zero degree sleeping bags are generally expensive, so unless you're planning on taking on very extreme weather, they might not be worth your purchase.

0 Degree Sleeping Bags

Think that 0 degree sleeping bags are right for you? Then come check this sleeping bag once you've finished reading about them. These 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 come with advanced technology like Thermotech insulation, which will seal in warmth even on the most frigid nights. 0 degree sleeping bags are ideal for winter camping, so they make it really easy for a person to stay comfortable in freezing temperatures. Something to keep in mind is that they are generally expensive, so if you won't be using the bag that much, you might want to think about purchasing a more affordable one. An advantage is that they feature an easy access design, so you don't have to struggle with the zipper while dealing with cold weather.

What Types of Liner Materials Are Available for Sleeping Bags?
Polyester Sleeping Bags

Are polyester sleeping bags the best fit for you? Take a look at this particular sleeping bag with a polyester liner that we picked out for you. Polyester sleeping bags are naturally hypoallergenic, so they are ideal for those with sensitive skin. They are designed with durable materials, so they will remain in excellent shape over time. These sleeping bags are easy to clean, so they can last a long time before needing a complete wash. Made with breathable material, they won't stick to your skin or make you feel overheated on warmer nights. They dry quickly, reducing the overall amount of water trapped and absorbed by the material.

Flannel Sleeping Bags

There are two sleeping bags available that come with a flannel liner. Flannel 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 very comfortable, so you don't have to suffer sleeping in the outdoors. They are designed for warmth, sealing out the cold so you'll stay cozy. They are moisture wicking, allowing you a better night's sleep in more humid conditions.

Poly Cotton Sleeping Bags

There is only one sleeping bag that has a poly cotton liner. Poly cotton sleeping bags are extremely durable, so no matter how many times they go in the wash, they won't pill or unravel. They are made with breathable material, causing the temperature inside your bag to remain comfortable and balanced. They are easy to clean, so you can keep them in great shape with just soap and water. They dry quickly, so when facing wet conditions, they hardly absorb any moisture. Ready to decide on the right sleeping bag for you? You can get started here.

Figure Out Which Shape to Pick for Sleeping Bags
Rectangular Sleeping Bags

Trying to choose the most suitable rectangle sleeping bag for you? We will help you make a more informed decision by giving you some important information that you need. These sleeping bags have a spacious design, so they are good for people who feel too confined by the tight mummy shape. They accommodate varying sleeping positions, making them ideal for people who have a preferred sleeping positions such as their sides or stomach. They feature double zippers, so they can double as a quilt. One downside is that they are quite heavy, so they are less convenient for when weight is a concern. On top of that, they are not very heat-efficient, creating more room inside which can weaken the bag's ability to keep you warm. Think you know which shape is perfect for you? Then check out this fantastic choice.

Mummy Sleeping Bags

Trying to decide on the most suitable mummy sleeping bag for your next outdoor adventure? We can help you decide by giving you some important facts. 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 less suitable for sleepers who toss and turn. A plus is that they are good for cold weather, so they are designed to hold in warmth and seal out cold drafts. Feel ready to choose the right sleeping bag for you? Get started here.