Unbiased 20 Degree Mummy Sleeping Bags Review


Our review process

We have collected, researched, and analyzed information on more than 800 different types of sleeping bags in order to suggest our top rated sleeping bags on the market. We then further sub-categorized them and looked more specifically at 59 different 20 degree mummy sleeping bags. In our research, we took into consideration a variety of different key features among the 28,000 different data points and combined it with customer reviews to inform you of the top 20 degree mummy sleeping bags available on the market. But don't just take our word for it, check out the pros and cons of some of the main specs.

This article will go through the key factors to keep in mind when purchasing a 20 degree mummy sleeping bag. 20 degree sleeping bags should keep you comfortable down to 20°F, although do keep in mind that this doesn't account for variables such as layering, what you're wearing, and various other factors. They are more affordable than sub-zero degree bags, so you can get these without feeling worried about going over your budget. 20 degree sleeping bags have a tight fitted hood design, so your neck and head will be enveloped in warmth. They weigh less than rectangular bags, providing excellent insulation per unit weight. Ideal for cold weather, they help trap body heat. However, mummy sleeping bags provide less space to move around, making them less suitable for sleepers who toss and turn.

Our Top Ranking Sleeping Bags:
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Snugpak
Size
single
Customer Rating
Brand
Western Mountaineering
Size
single
Customer Rating
Brand
Slumberjack
Size
single
Customer Rating
Brand
Snugpak
Size
single
Customer Rating
Brand
Marmot
Size
single
Best Overall Score
An image of Snugpak Special Forces 2 91173 20 Degree Paratex Light Sleeping Bag

Use the Snugpak Special Forces 2 20 Degree Paratex Light Mummy Sleeping Bag to stay warm in the outdoors. This sleeping bag has a double size, which will offer you more space to stretch out. It is perfect for camping, giving you the necessary protection to comfortably sleep outdoors after the temperatures drop at night. This sleeping bag has a mummy shape, which is wider on top and more tapered on the bottom, keeping warm air close to your body. It features a Paratex light lining, which will feel dry and cool as the fabric wicks away any moisture. This sleeping bag detaches via zippers, so you can easily transform your double bag into two individual ones. It has a 20°F temperature rating, providing you with the warmth you need for temperatures above freezing. It features a stuff sack, which will keep your pack organized.

    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
Runner Up
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. With a mummy shape, this Western Mountaineering sleeping bag is tight fitting to prevent cold air pockets. It features a nylon taffeta lining and an ExtremeLite exterior, which provides a high level of insulation by using very lightweight yarn. 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. With a compressible design, this sleeping bag does not take up all of the usable space in your backpack so you will have sufficient room to bring along other equipment. With a lightweight build, it is perfect if you want to save space and move fast,.

    Pros
    • Made to compress easily
    • Lightweight build
    • Mummy shape is suitable for hiking
    Cons
    • Mummy shape doesn't have extra space to move around
For Cold Weather
An image of Slumberjack Boundary 51725415RR Men's 20 Degree Sleeping Bag

With a high user rating, the Slumberjack Boundary Men's 20 Degree Mummy Sleeping Bag could be exactly what you need for your next outdoor adventure. This Slumberjack sleeping bag has a mummy shape, which is larger on top and more tapered on the bottom, keeping warm air closer to you. It unzips on each side for easy access. This sleeping bag features a 20°F temperature rating, providing you with the warmth you need when temperatures are above freezing. Ideal for winter, it will protect you from harsh temperatures.

    Pros
    • Can withstand cold winter weather
    • Mummy shape is excellent for backpacking
    • Single size sleeping bags have great insulation
    Cons
    • Mummy shape restricts different sleeping positions
Best Affordable Option
An image of Snugpak Basecamp Sleeper Lite 98130 20 Degree Synthetic Sleeping Bag

Before purchasing the Snugpak Basecamp Sleeper Lite 20 Degree Synthetic Mummy Sleeping Bag, it's important to learn more about it. This sleeping bag has a synthetic lining, which will provide more warmth without adding a ton of bulk. With a mummy shape, it is made with maximum warmth-to-weight ratio, since it is fitted so there isn't extra fabric, cutting down on the weight and making it easier to carry on your back. It has a 20°F temperature rating, providing you with the warmth you need when temperatures are above freezing.

    Pros
    • Synthetic lining is hypoallergenic
    • Mummy shape is suitable for backpacking
    • Single size sleeping bags have good insulation
    Cons
    • Synthetic material does not have good warmth-to-weight ratio
    • Mummy shape limits different sleeping positions
For Backpacking
An image of Marmot Ironwood 900927-3873 Men's 20 Degree Sleeping Bag

You'll want to learn all about the Marmot Ironwood Men's 20 Degree Mummy Sleeping Bag to discover what sets it apart from all the other sleeping bags on the market. Featuring a mummy shape, this Marmot sleeping bag is tight fitting to prevent cold air pockets. It is lightweight and is made for hiking, so if weight is your priority this could be a great option. This Marmot sleeping bag uses Down Defender, protecting down from clumping when exposed to wet weather. It features a stuff sack and a two-way zipper, so you can easily control the temperature inside the sleeping bag. With an interior pocket, it has a convenient place to store important objects. This Marmot sleeping bag is suitable for temperatures around 20°F and is waterproof, keeping out moisture, so you won't end up soaked if it starts raining.

    Pros
    • Two-way zipper provides airflow at the bottom of the sleeping bag
    • Lightweight build
    • Mummy shape is great for hiking
    Cons
    • Mummy shape is very fitted with no 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, keeping cold air out and the heat in. It works well for camping trips, offering cozy warmth and good compressibility.

This Teton sleeping bag has a compression bag, which will make packing up your bag very easy. It has an easy access tab, so you won't have to struggle with the zippers in order to get in and out quickly. It has a mummy-style hood, which fits snugly over your head, helping keep you warm by trapping body heat. This sleeping bag detaches via zippers, so you can transform it into two separate sleeping bags.

    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 Kelty TRU Comfort 35420916LR 20 Degree Polyester Taffeta Sleeping Bag

Let's review the Kelty TRU Comfort 20 Degree Polyester Taffeta Mummy Sleeping Bag, a popular choice among online shoppers. Featuring a mummy shape, this Kelty sleeping bag is fitted to prevent cold air pockets. It features a polyester shell, which will deflect UV light, shielding you from harmful sunlight, and a polyester taffeta lining, which does not retain water, keeping the material from getting too wet. This Kelty sleeping bag has ThermaPro insulation, which will trap warmth by utilizing synthetic insulation. It has a stuff sack, which takes up hardly any space and will make packing so much easier. This Kelty sleeping bag is suitable for temperatures around 20°F for warmth when outdoor temperatures are in the 20s or above. Its hood is designed with drawstrings, so you can adjust the fit based on the temperature outside.

    Pros
    • Drawstring hood gives extra comfort by the head
    • Stuff sack provides space to stash small items
    • Polyester taffeta lining is UV-resistant
    Cons
    • Mummy shape doesn't have space to move around
    • Polyester exterior is not very durable
    • Stuff sack can damage the sleeping bag's insulation after prolonged use
An image of Big Agnes Hog Park Men's 20 Degree Sleeping Bag

Get a good night's sleep while using the Big Agnes Hog Park Men's 20 Degree Mummy Sleeping Bag. This sleeping bag has a mummy shape, which is wider on top and more tapered by the feet, keeping warm air closer to you. It has Thermolite Extra material, so you will be warmer and drier as the hollow-core fibers of the fabric keep your body heat inside the sleeping bag. It features a 20°F temperature rating, designed for warmth when outdoor temperatures are in the 20s or higher. Suitable for camping, it gives you the necessary protection to comfortably sleep outdoors after the temperatures drop at night. This sleeping bag has a stuff sack, which is the perfect size to store any small items.

    Pros
    • Stuff sack provides a place to store loose items
    • Mummy shape is great for backpacking
    • Single size sleeping bags are well insulated
    Cons
    • Mummy shape has a tight cut which can be uncomfortable for some
    • Camping sleeping bags are not suitable for hiking
    • Stuff sack can damage the sleeping bag's filling if used for too long
An image of Browning Kenai 4897227 20 Degree Microfiber Sleeping Bag

Choose the Browning Kenai 20 Degree Microfiber Mummy Sleeping Bag to stay warm in the outdoors. Featuring a mummy shape, this Browning sleeping bag is fitted to prevent cold air pockets. It features a 20°F temperature rating, providing you with the warmth you need when temperatures are above freezing. This sleeping bag is designed with a microfiber lining and it is made with a nylon ripstop shell, so it resists wear and tear. It detaches via zippers, so you can split it into two separate sleeping bags. It has a compressible design and is designed to be compact, so it cuts down the total volume of your bag. This Browning sleeping bag works well for camping trips, offering cozy warmth without adding a lot of weight.

    Pros
    • Made to be compact, getting rid of the bulk
    • Compresses easily
    • Nylon ripstop exterior is breathable and comfortable
    Cons
    • Mummy shape has a tight fit which may not be comfortable for every sleeper
    • Camping sleeping bags are not suitable for hiking
An image of Kelty Sine 35413017LR 20 Degree Nylon Taffeta Sleeping Bag

With the Kelty Sine 20 Degree Nylon Taffeta Mummy Sleeping Bag, you can experience a great night's sleep while on your weekend away. This Kelty sleeping bag has a mummy shape, sealing in your body heat since it is very fitted. It is made with Dridown technology, so the air-trapping down clusters will remain protected from moisture. This Kelty sleeping bag features a nylon taffeta lining and is made with a nylon ripstop shell, so it lasts for a long period of time. It features a 20°F temperature rating for warmth when outdoor temperatures are in the 20s or above. It is lightweight and is designed for camping, giving you insulation to comfortably sleep outdoors after the temperatures drop at night. This sleeping bag is equipped with a built-in pillowcase and includes a mesh storage sack, which gives you a convenient and secure spot to stash your valuable and small possessions, such as your watch. It features a stuff sack, which takes up hardly any space and will make packing your bag so much easier.

    Pros
    • Features a built-in pillowcase
    • Stuff sack provides a place to stash loose items
    • Lightweight build
    Cons
    • Mummy shape is very fitted with no extra space to move
    • Camping sleeping bags are not suitable for backpacking
    • Stuff sack can ruin the sleeping bag's filling if used for too long
20 Degree Mummy Sleeping Bags: Here's Some More Information To Consider:
Thinking About Seasonality for 20 Degree Mummy Sleeping Bags
3 Season Sleeping Bags

Do you like camping outside in the summer, spring, and fall but prefer to stay indoors in the winter months? Check out this awesome one. 3 season sleeping bags have enough insulation for colder weather camping trips in spring through to autumn, which provides you with the comfort and warmth you need for sleeping outside during almost every season. Suitable for most conditions, except for when there may be frost or snow on the ground, they are extremely versatile and will provide you with the insulation you need, unless you're planning on going on an extreme alpine winter expedition.

2 Season Sleeping Bags

If you've been searching for a 20 degree mummy sleeping bag for 2 seasons, then you should check out some of the things we have to say below. 2 season sleeping bags are designed to be lightweight, so you can take them on just about every adventure you embark on, without being held back by uncomfortable weight. They are good for warmer weather, so you can sleep through even the hottest nights. These sleeping bags have good ventilation features, letting a comfortable flow of air through, so you wont get overheated at night. Something to keep in mind is that they feature the least amount of weather protection, which won't offer the necessary weather protection for cold outdoor temperatures. If you are considering getting a 20 degree mummy sleeping bag for 2 season use, check out this awesome one.

Decide Which Size to Pick for 20 Degree Mummy Sleeping Bags
Double Sleeping Bags

There is only one 20 degree mummy sleeping bag that comes in a double size. These sleeping bags are suitable for couples, so you can stay warmer using the combined body heat of you and your partner. They are suitable for car camping, so you'll sleep better when you're not constricted and weight isn't an issue. However, they take up a lot of space, making them less ideal for backpacking pursuits. With this additional information about double size sleeping bags, check out this great 20 degree mummy sleeping bag that we looked at.

Single Sleeping Bags

Are single 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 20 degree mummy sleeping bag that we picked out for you. These 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. They are designed to be compact, making them easy to fold up and throw in your bag.

Know the Difference Between the Kinds of Liner Materials for 20 Degree Mummy Sleeping Bags
Synthetic Sleeping Bags

There are two 20 degree mummy sleeping bags available that come with a synthetic liner. Synthetic sleeping bags can be easily compressed, making it ideal for minimalist packers. They are designed for warmth, sealing out the cold so you'll stay cozy. They are designed with durable materials, so they will not pill or tear with extended use. They are easy to clean, so you can keep them in great shape with just soap and water. They are moisture wicking, keeping you dry on humid nights. They are designed to be lightweight, so no matter the trail, they won't weigh you down.

Polyester Sleeping Bags

Are polyester sleeping bags the best fit for you? Take a look at this particular 20 degree mummy sleeping bag with a polyester liner that we picked out for you. 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 designed with durable materials, so they will not pill or tear with extended use. They are easy to clean, so you can keep them in great shape with just soap and water. They are made with breathable material, causing the temperature inside your bag to stay comfortable and balanced. They dry quickly, so even in the wettest conditions, they hardly absorb any moisture.

Down Sleeping Bags

There is only one 20 degree mummy sleeping bag that has a down liner. These down sleeping bags are designed to be insulated, so they trap your body heat very well, keeping you cozy regardless of the weather. They feature an easily compressible design, so you can bring your sleeping bag without compromising the space of your other gear. They are designed with durable materials, so you can go years before needing to replace them. They are made with breathable material, providing you a way to stay comfortable on warmer nights. They are designed for warmth, so cold temperatures won't keep you from an epic outdoor adventure. They are very comfy, ensuring your child receives a good night's sleep after a long day in the outdoors. Now that you know more about down, take a look here.