Best Cold Weather Mummy Sleeping Bags


Our review process

We have collected, researched, and analyzed information on over 800 various kinds of sleeping bags in order to suggest our highest scoring sleeping bags today. We then further sub-categorized them and looked more specifically at 133 different cold weather mummy sleeping bags. In our research, we took into consideration a large variety of different key features among the 28,000 different data entries and combined it with customer reviews to inform you of the finest cold weather mummy sleeping bags available. But don't just take our word for it, check out some of the advantages and disadvantages of some of the main specs.

We've reviewed cold weather mummy sleeping bags and wanted to let you in on a few things. Mummy 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 benefit is that they help trap body heat, providing maximum warmth, since their tight fitting cut is designed to trap body heat.

Preventing any heat loss, these sleeping bags are critical when you're out in the cold for extended periods of time. They have draft tubes, which run behind the zipper to help prevent warm air from escaping. Cold weather sleeping bags are commonly designed with a draft collar, keeping warm air in and cold air out. They are more often than not made with feather down, compressing down into a size small to fit in the bottom of your hiking bag.

Our Top Ranking Sleeping Bags:
Product NameBrandLiner MaterialTemperature RatingColorSize
Best Overall Score
1
An image of Snugpak Basecamp OPS 98600 10 Degree Synthetic Sleeping Bag
Snugpak Basecamp OPS 98600 10 Degree Synthetic Sleeping Bag
Snugpak
synthetic
10 degree
olive
Runner Up
2
An image of Western Mountaineering Alder MF 30 Degree Sleeping Bag
Western Mountaineering Alder MF 30 Degree Sleeping Bag
Western Mountaineering
30 degree
royal blue
single
Best Affordable Option
3
An image of Slumberjack Boundary 51726215LL Men's 40 Degree Polyester Taffeta Sleeping Bag
Slumberjack Boundary 51726215LL Men's 40 Degree Polyester Taffeta Sleeping Bag
Slumberjack
polyester taffeta
40 degree
single
For Backpacking
4
An image of Marmot Ironwood 30 900925-4938 Men's 30 Degree Sleeping Bag
Marmot Ironwood 30 900925-4938 Men's 30 Degree Sleeping Bag
Marmot
30 degree
green
For Sleeping Two
5
An image of Teton 110 Mammoth Gray 7 Ft. 10 in. Couple Poly-Flannel Mummy Camping Thermal Sleeping Bag
Teton 110 Mammoth Gray 7 Ft. 10 in. Couple Poly-Flannel Mummy Camping Thermal Sleeping Bag
Teton
poly-flannel
20 degree
gray
double
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Snugpak
Liner Material
synthetic
Temperature Rating
10 degree
Color
olive
Size
Customer Rating
Brand
Western Mountaineering
Liner Material
Temperature Rating
30 degree
Color
royal blue
Size
single
Customer Rating
Brand
Slumberjack
Liner Material
polyester taffeta
Temperature Rating
40 degree
Color
Size
single
Customer Rating
Brand
Marmot
Liner Material
Temperature Rating
30 degree
Color
green
Size
Customer Rating
Brand
Teton
Liner Material
poly-flannel
Temperature Rating
20 degree
Color
gray
Size
double
Best Overall Score
An image of Snugpak Basecamp OPS 98600 10 Degree Synthetic Sleeping Bag

Get a good night's sleep with the Snugpak Basecamp OPS 10 Degree Synthetic Mummy Sleeping Bag. With a mummy shape, this Snugpak sleeping bag is fitted to prevent warm air from escaping. It has a synthetic lining, which will provide more warmth without adding a ton of weight. It features a 10°F temperature rating, providing a heavy layer of insulation between you and the cold outside.

    Pros
    • Synthetic lining is hypoallergenic
    • Mummy shape has excellent insulation
    • Comes in a cool olive color
    Cons
    • Synthetic material is not very compressible
    • Mummy shape does not have extra space to move around
Runner Up
An image of Western Mountaineering Alder MF 30 Degree Sleeping Bag

Choose the Western Mountaineering Alder MF 30 Degree Mummy Sleeping Bag to stay warm in the outdoors. Featuring a mummy shape, this Western Mountaineering sleeping bag is tight fitting to prevent cold air pockets. It has a 30°F temperature rating, which is designed for retaining warmth, keeping you well-insulated in chilly weather. This Western Mountaineering sleeping bag detaches via zippers, so you can easily transform your double bag into two individual ones.

    Pros
    • Mummy shape is suitable for backpacking
    • Single size sleeping bags have great insulation
    • Available in a stylish royal blue color
    Cons
    • Mummy shape restricts different sleeping positions
Best Affordable Option
An image of Slumberjack Boundary 51726215LL Men's 40 Degree Polyester Taffeta Sleeping Bag

If you're looking for a new sleeping bag, you might want to consider the Slumberjack Boundary Men's 40 Degree Polyester Taffeta Mummy Sleeping Bag, which is rated very highly among customers. Featuring a mummy shape, this Slumberjack sleeping bag is fitted to prevent cold air pockets. It can withstand 40°F temperatures, keeping you warm on chilly summer nights. This Slumberjack sleeping bag has a polyester exterior, which resists UV light, shielding you from harmful sun rays, and a polyester taffeta lining, which doesn't retain water, keeping the fabric from getting too wet. It features Slumberloft™ synthetic insulation, which uses polyester fibers to create a high level of insulation. This sleeping bag comes with a stuff sack, which will keep your pack organized.

    Pros
    • Stuff sack stores sleeping bags compactly
    • Polyester taffeta lining is naturally UV-resistant
    • Polyester shell is durable and colorfast
    Cons
    • Mummy shape has a tailored cut which can be too cramped for some
    • Polyester shell is not so durable
    • Stuff sack can damage the sleeping bag's filling if used for too long
For Backpacking
An image of Marmot Ironwood 30 900925-4938 Men's 30 Degree Sleeping Bag

Sleep comfortably with the Marmot Ironwood 30 Men's 30 Degree Mummy Sleeping Bag. Featuring a mummy shape, this sleeping bag is fitted to prevent cold air pockets. It is lightweight and is perfect for hiking, so it is compact and easy to fit in your pack, making it comfortable to carry no matter the distance. This Marmot sleeping bag has Down Defender, which prevents down from clumping when exposed to moisture.

With an interior pocket, this Marmot sleeping bag has a handy spot to stash small objects. It features a stuff sack and a two-way zipper, so you can easily control the temperature inside the sleeping bag. This Marmot sleeping bag can withstand 30°F temperatures and is waterproof, making it a good choice for damp environments. It is easy to pack, making it a wonderful option if mobility and space are a key factor for you.

    Pros
    • Easy to pack sleeping bags roll up compactly
    • Two-way zipper provides airflow at the bottom of the sleeping bag
    • Lightweight construction
    Cons
    • Mummy shape doesn't have extra space to move around
For Sleeping Two
An image of Teton 110 Mammoth Gray 7 Ft. 10 in. Couple Poly-Flannel Mummy Camping Thermal Sleeping Bag

Before purchasing the Teton Mammoth Poly-Flannel Mummy Sleeping Bag, it's important to know more. This Teton sleeping bag is available in a double size, giving more space to stretch out. It has a poly-flannel lining, which increases the insulation of your sleeping bag and performs well in harsher climates. With a mummy shape, it is tight fitting to prevent cold air pockets.

This Teton sleeping bag has Superloft Elite Hollow Fiber Fill, which keeps out the chill on colder nights. Featuring a compressible design, it does not take up all the space in your bag so you will have enough room to bring along other gear. It is thermal, so you can stay toasty warm all night. It works well for camping trips, offering cozy warmth and good compressibility.

This Teton sleeping bag features a compression bag, which will make packing up your bag hassle-free. It has an easy access tab, so you can get in and out effortlessly. It has a mummy-style hood, which fits snugly over your head, helping keep you warm by trapping body heat. This Teton sleeping bag detaches via zippers, so you can easily transform your double bag into two individual ones.

    Pros
    • Made to compress easily
    • Mummy-style hood traps body heat
    • Mummy shape is great for hiking
    Cons
    • Poly-flannel is not absorbent
    • Mummy shape limits sleeping positions
    • Camping sleeping bags are not suitable for hiking
Additional Picks
An image of Snugpak Special Forces 2 91173 20 Degree Paratex Light Sleeping Bag

With the Snugpak Special Forces 2 20 Degree Paratex Light Mummy Sleeping Bag, you can experience a great night's sleep while on your weekend away. Featuring a mummy shape, this Snugpak sleeping bag is tight fitting to prevent cold air pockets. It can withstand 20°F temperatures for warmth when outdoor temperatures are in the 20s or higher. This sleeping bag features a Paratex light lining, which will feel dry and cool due to the wicking action of the fabric. Designed in a double size, it sleeps two campers, allowing you to keep warm by sharing body heat. It detaches via zippers, so you can easily split your double bag into two individual ones. This Snugpak sleeping bag works well for camping trips, offering cozy warmth and good compressibility. It comes with a stuff sack, which is the perfect size to store your sleeping bag and any other small items conveniently.

    Pros
    • Stuff sack will keep your bag organized
    • Mummy shape is great for backpacking
    • Comes in desert tan to add style to your overnight trips
    Cons
    • Mummy shape is very fitted with no extra space to move around
    • Camping sleeping bags are not suitable for hiking
    • Stuff sack can damage the sleeping bag's filling after prolonged use
An image of Kelty Tru.Comfort 35420316SR Kids 30 Degree Polyester Taffeta Sleeping Bag

With the Kelty Tru.Comfort Kids 30 Degree Polyester Taffeta Mummy Sleeping Bag, your kids will have a great weekend getaway. This kids sleeping bag keeps your children warmer as there is not as much extra space in the sleeping bag for their body heat to warm up. This sleeping bag features a polyester exterior, which deflects UV light, protecting your kids from damaging sun rays, and a polyester taffeta lining, which does not retain water, keeping the fabric from getting too wet. It has a mummy shape, which is wider on top and more fitted on the bottom, keeping warm air close to your kid's body.

This sleeping bag features Cloudloft™ insulation, which retains warmth by combining hollow core and solid core fibers to create ultimate insulation. It can withstand 30°F temperatures, keeping your kids warm on chilly summer nights. It is perfect for camping, giving your kids the necessary protection to comfortably sleep outdoors after the temperatures drop at night. Featuring a compressible design, it fits easily into a backpack or bag.

    Pros
    • Made to compress easily
    • Kids cut is easy to use
    • Polyester taffeta lining is UV-resistant
    Cons
    • Mummy shape is very fitted with no extra space to move
    • Camping sleeping bags are heavier than backpacking bags
    • Polyester exterior is not very durable
An image of Western Mountaineering UltraLite 20 Degree Nylon Taffeta Sleeping Bag

If you're looking to buy a new sleeping bag, you might want to consider the Western Mountaineering UltraLite 20 Degree Nylon Taffeta Mummy Sleeping Bag. This Western Mountaineering sleeping bag is lightweight, so it won't hurt your shoulders to carry. It features a nylon taffeta lining and an ExtremeLite shell, which provides a high level of insulation by using very lightweight yarn. With a mummy shape, it is made with maximum warmth-to-weight ratio, since it is cut closely so there is no extra fabric, cutting down on the weight and making it easier to carry. This sleeping bag features a compressible design, giving you sufficient extra space to take along your other essentials. It is suitable for temperatures around 20°F and is waterproof, keeping out moisture, so you won't end up soaked if bad weather hits.

    Pros
    • Made to compress easily
    • Lightweight build
    • Mummy shape is suitable for hiking
    Cons
    • Mummy shape doesn't have extra space to move around
An image of Snugpak Basecamp Sleeper Extreme 98140 10 Degree Polyester Sleeping Bag

With an excellent user rating, the Snugpak Basecamp Sleeper Extreme 10 Degree Polyester Mummy Sleeping Bag could be just what you need for your next outdoor adventure. With a mummy shape, this Snugpak sleeping bag is made with excellent warmth-to-weight ratio, since it is cut closely so there isn't extra material, reducing the weight and making it easier to carry. It has a polyester lining, which is light and comfortable on your skin and doesn't get as hot as other fabrics once you're inside, and a polyester exterior, which is breathable and comfortable. This sleeping bag can withstand 10°F temperatures, providing a heavy layer of insulation between you and the cold outside. It has a compression bag, which provides you with the perfect space to pack away your sleeping bag and any other small items.

    Pros
    • Polyester lining is durable and colorfast
    • Polyester exterior resists UV rays
    • Mummy shape has excellent insulation
    Cons
    • Polyester can get dirty easily
    • Mummy shape has a tailored fit which can be too cramped for some
    • Polyester exterior is not very durable
An image of Western Mountaineering Caribou MF 30 Degree Taffeta Sleeping Bag

Choose the Western Mountaineering Caribou MF 30 Degree Taffeta Mummy Sleeping Bag to stay warm in the outdoors. This sleeping bag has a mummy shape, which is wider on top and more fitted on the bottom, keeping warm air closer to you. With a lightweight build, it is perfect if you're planning on trekking or hiking long trails by foot. It has a taffeta lining, which will feel very silky and has good ventilation. This Western Mountaineering sleeping bag can withstand 30°F temperatures and is waterproof, making it a good choice for wet conditions. Suitable for summer, it is extremely thin and airy since it does not require as much insulation as winter or 3 season versions. It features Microlite XP™ microfiber, which is highly breathable, easy-to-carry, and resistant to water, with a thread count of over 400 threads per square inch.

    Pros
    • Lightweight build
    • Ventilated properly for summer weather
    • Mummy shape has great insulation
    Cons
    • Mummy shape does not have extra space to move around
Learn More About Cold Weather Mummy Sleeping Bags:
Number of Seasons a Mummy Sleeping Bag Can Keep You Warm in
3 Season Sleeping Bags

If you're looking for a mummy sleeping bag for 3-seasons, then you should check out some of the things we have to say below. Suitable for most conditions, except for when there may be frost or snow on the ground, 3 season sleeping bags are extremely versatile and will provide you with the insulation you need, unless you're planning on going on an alpine winter expedition. They have enough insulation for colder weather camping trips in spring through to autumn, sealing out chilly drafts so you'll stay cozy and warm all through the night. If you are considering getting a mummy sleeping bag for 3 season use, check out this awesome one.

4 Season Sleeping Bags

Think that 4 season sleeping bags are what you're looking for? Then come check this mummy sleeping bag after you finish reading more information on them. 4 season sleeping bags feature an insulated hood that can be cinched in, which increases the level of protection against cold air penetrating the outer shell. They have extra insulation for sleeping outdoors in all four seasons, so you won't have the cold as an excuse for keeping you back from adventuring into the wilderness. However, they have more expensive price tag than 2 or 3 season sleeping bags, which may only be worth considering if you're looking to make more of a long-term investment.

2 Season Sleeping Bags

Are 2 season sleeping bags the best fit for you? Learn more about them in this paragraph and if you still want to check them out, then come take a look at this particular mummy sleeping bag that we chose for you. These sleeping bags are good for warmer weather, so you won't wake up in a sweat on hot nights. They have a lightweight design, so you can avoid straining your back. 2 season sleeping bags have good ventilation features, so even if it's muggy and humid outside, you'll still feel cool and comfortable inside. However, they have the least amount of weather protection, which won't offer the necessary weather protection for cold outdoor temperatures.

Which Size Best Suits Mummy Sleeping Bags
Double Sleeping Bags

If you're looking for a double mummy sleeping bag, then you should consider this highly rated sleeping bag. Double sleeping bags have a design that is great for two people, which makes them great for winter getaways. They are good for car camping, taking full advantage of all the space in the car. One downside is that they take up a lot of space, making them less ideal for backpacking pursuits.

Single Sleeping Bags

It can be hard to decide on the right size for your mummy sleeping bag. We're here to help you think about the perfect choice for you. Single sleeping bags weigh less than double sleeping bags, so if you don't need a lot of sleeping space, they are better for carrying less overall weight. They have enough space for one, which provides excellent heat efficiency to the sleeper inside. Single sleeping bags provide a compact packing solution, making them easy to fold up and throw in your bag. With this additional information about single size sleeping bags, check out this awesome mummy sleeping bag that we chose.

What Types of Liner Materials Are Available for Mummy Sleeping Bags?
Synthetic Sleeping Bags

Are synthetic sleeping bags the best choice for you? Take a look at this particular mummy sleeping bag with a synthetic liner that we highly recommend. Synthetic sleeping bags can be easily compressed, so they don't require a substantial amount of storage space when you are finished using it. They are designed for warmth, so fear of the cold won't keep you from an epic outdoor adventure. Synthetic sleeping bags are easy to clean, so they can go many years before needing a complete wash. They are extremely durable, withstanding extended long term use and remaining intact. They are moisture wicking, allowing you a better night's sleep in more humid conditions. They are designed to be lightweight, so they are ideal for long-distance backpacking trips or other adventures where weight and volume are a priority.

Polyester Sleeping Bags

Are polyester sleeping bags the best choice for you? Take a look at this particular mummy sleeping bag with a polyester liner that we highly recommend. These polyester sleeping bags are naturally hypoallergenic, so they are ideal for allergy sufferers. They are extremely durable, so they can tolerate extensive use without being damaged. They are breathable, promoting ample airflow so you don't get too hot. 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 dry quickly, so even in the wettest conditions, they hardly absorb any moisture.

Down Sleeping Bags

Are down sleeping bags the right fit for you? Take a look at this particular mummy sleeping bag with a down liner that we picked out for you. Down sleeping bags feature an easily compressible design, making it ideal for minimalist packers. They are designed to be insulated, so they trap your body heat very well, keeping you warm regardless of the weather. Down sleeping bags are designed for warmth, so cold temperatures won't keep you from an epic outdoor adventure. They are very comfy, ensuring your child sleeps soundly after a long day adventuring in the outdoors. Made with breathable material, down sleeping bags won't stick to your skin and make you feel overheated on warmer nights. They are extremely durable, withstanding extended long term use and staying intact.