Best Lightweight 20 Degree Sleeping Bags


Our review process

We've taken a look at more than 800 sleeping bags, including plenty of different lightweight 20 degree sleeping bags. We used our advanced AI technology to rank each individual sleeping bag based on a number of data parameters. These features range from the temperature rating and the number of seasons to cleaning options and designs. The following guide will discuss lightweight 20 degree sleeping bags in particular, of which we found 30. We hope that this guide will help you pick the best one for you.

Before deciding on your next lightweight 20 degree sleeping bag, there are important things you'll want to know about. 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 have a tight fitted hood design, so your neck and head will be enveloped in warmth. They are tight fitting, minimizing the amount of air around your body, so there is less overall space to heat up. 20 degree sleeping bags are generally cheaper than sub-zero degree bags, so you can buy one without feeling worried about going over your budget.

These sleeping bags pack down to a small size, helping you reduce the volume your bag takes up. Since extra weight can make a hike or trek more physically demanding, they are great for those who haven't been backpacking or camping before and aren't used to carrying a big load. They are easy to carry, helping you travel quicker, farther and more comfortably. However, they are typically not as well-insulated, so although they are easy to carry, they don't come with all of the additional features and accessories that extreme weather sleeping bags do.

Our Top Ranking Sleeping Bags:
Product NameBrandShapeSize
Best Overall Score
1
An image of Western Mountaineering UltraLite 20 Degree Nylon Taffeta Sleeping Bag
Western Mountaineering UltraLite 20 Degree Nylon Taffeta Sleeping Bag
Western Mountaineering
mummy
single
Runner Up
2
An image of Abco Tech 20 Degree Polyester Sleeping Bag
Abco Tech 20 Degree Polyester Sleeping Bag
Abco Tech
rectangle
single
For Cold Weather
3
An image of Kelty Sine 35413017LR 20 Degree Nylon Taffeta Sleeping Bag
Kelty Sine 35413017LR 20 Degree Nylon Taffeta Sleeping Bag
Kelty
mummy
single
For Backpacking
4
An image of Marmot Ironwood 900927-3873 Men's 20 Degree Sleeping Bag
Marmot Ironwood 900927-3873 Men's 20 Degree Sleeping Bag
Marmot
mummy
single
Best Affordable Option
5
An image of Coleman Dunnock Cold Weather SS-SMS-765711 Men's 20 Degree Cotton Flannel Sleeping Bag
Coleman Dunnock Cold Weather SS-SMS-765711 Men's 20 Degree Cotton Flannel Sleeping Bag
Coleman
rectangle
single
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Western Mountaineering
Shape
mummy
Size
single
Customer Rating
Brand
Abco Tech
Shape
rectangle
Size
single
Customer Rating
Brand
Kelty
Shape
mummy
Size
single
Customer Rating
Brand
Marmot
Shape
mummy
Size
single
Customer Rating
Brand
Coleman
Shape
rectangle
Size
single
Best Overall Score
An image of Western Mountaineering UltraLite 20 Degree Nylon Taffeta Sleeping Bag

Get ready for your next trip with 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 threads. This Western Mountaineering sleeping bag is ideal for temperatures around 20°F and is waterproof, keeping out moisture, so you won't end up soaked if it starts raining. With a compressible design, it packs easily into a backpack or overnight bag. It is lightweight, making it great for hiking or traveling long distances on foot.

    Pros
    • Made to compress easily
    • Lightweight build
    • Mummy shape is suitable for hiking
    Cons
    • Mummy shape doesn't have extra space to move around
Runner Up
An image of Abco Tech 20 Degree Polyester Sleeping Bag

With a great user rating, the Abco Tech 20 Degree Polyester Rectangular Sleeping Bag could be exactly what you need for your next outdoor adventure. This sleeping bag has a rectangular shape, which offers you room to move around in your sleep since it is not tight fitting. This 4 season sleeping bag can handle very low temperatures or areas with lots of snow. It features a polyester exterior, which will resist UV light, shielding you from damaging sunlight, and a polyester lining, which is light and soft on your skin and doesn't get as hot as other fabrics during the night. 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.

This sleeping bag is designed for hiking and is lightweight, making long days out on the trail easier to tackle. It features a compressible design and is made to be compact, so it can be rolled up very small, fitting conveniently wherever you tale it. It is easy to carry, is machine washable, and is easy to clean, so you won't have to send it to a professional to maintain its quality and warmth. This Abco Tech sleeping bag features a compression bag, which will make packing up your bag very easy.

    Pros
    • Can be machine washed
    • Designed to be compact, getting rid of the bulk
    • Compresses easily
    Cons
    • Polyester absorbs grease
    • Rectangular shape is bulkier than other shapes
    • Polyester exterior is not so durable
For Cold Weather
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 trip. 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, providing you with the warmth you need for temperatures above freezing. It is ideal for camping and is lightweight, making it great for hiking or traveling long distances on foot. This sleeping bag is equipped with a built-in pillowcase and has a mesh storage sack, so you can stash your important items, like your flashlight. It features a stuff sack, designed for conveniently fitting your sleeping bag into your backpack along with the rest of your equipment.

    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
For Backpacking
An image of Marmot Ironwood 900927-3873 Men's 20 Degree Sleeping Bag

See all that nature has to offer from the comfort and safety of the Marmot Ironwood Men's 20 Degree Mummy Sleeping Bag. Featuring a mummy shape, this sleeping bag is fitted to prevent warm air from escaping. It is suitable for temperatures around 20°F and is waterproof, making it a good fit for rainy conditions. This sleeping bag uses Down Defender, protecting down from clumping when exposed to moisture. It is lightweight and works well for hiking trips, so if you don't want to carry a lot of weight this could be a great choice for you. It includes an interior pocket, so you can stash your important items, such as your flashlight. This sleeping bag features a two-way zipper, and a stuff sack, which will keep your pack organized.

    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
Best Affordable Option
An image of Coleman Dunnock Cold Weather SS-SMS-765711 Men's 20 Degree Cotton Flannel Sleeping Bag

With the Coleman Dunnock Cold Weather Men's 20 Degree Cotton Flannel Rectangular Sleeping Bag, you can experience a great night's sleep while on your trip. This Coleman sleeping bag has a rectangular shape, allowing you to comfortably sleep on your side, back, or stomach without feeling restricted. Ideal for winter, it is built with strong materials that are highly insulated which protect against extra cold weather conditions. It features a cotton flannel lining and has a cotton shell, so you will not overheat, as it's very strong, highly breathable, and doesn't absorb sunlight. It can withstand 20°F temperatures, providing you with the warmth you need when temperatures are above freezing. Designed with Thermolock technology, this sleeping bag reduces heat loss through the zipper since it has an added layer of insulation along the opening.

This Coleman sleeping bag features a plush bottom, so you won't feel the bumps on the ground beneath you. It is designed for camping and is lightweight, making long days out on the trail easier to tackle. This Coleman sleeping bag is equipped with a zipper guard, preventing the material from getting caught in the zipper. It is designed to be easy to pack, can be machine washed, and has roll control.

    Pros
    • Machine washable
    • Made with a plush bottom
    • Roll control tab keeps the sleeping bag straight
    Cons
    • Rectangular shape is bulkier than other shapes
    • Camping sleeping bags are bulkier than hiking bags
    • Cotton exterior is heavy
For Sleeping Two
An image of Alps Mountaineering Spectrum 4119833 20 Degree Polyester Sleeping Bag

Choose the Alps Mountaineering Spectrum 20 Degree Polyester Rectangular Sleeping Bag to stay warm and cozy in the outdoors. This Alps Mountaineering sleeping bag has a polyester shell and a polyester lining, which is a synthetic fabric that is very durable and vibrant. It is made for two sleepers. It has a rectangular shape, which is non-tapered, allowing you to comfortably move around in your sleep.

This sleeping bag is made for camping and is lightweight, making it great if your number one priority is low volume and weight. It has Techloft silver insulation, which uses tiny, silicone-coated, micro-denier fibers that increase insulation, comfort, and compactness. Featuring a compressible design, it packs easily into a hiking backpack or bag. This sleeping bag has a stuff sack, which will keep your backpack organized. It features a 20°F temperature rating, providing you with the warmth you need for temperatures above freezing. It detaches via zippers and has an interior pocket, so you will have a place to conveniently stash your small essentials, such as a phone or a flashlight.

    Pros
    • Made to compress easily
    • Stuff sack provides a place to stash small items
    • Lightweight build
    Cons
    • Polyester absorbs oil
    • Rectangular shape is heavier than other shapes
    • Camping sleeping bags are not suitable for hiking
Additional Picks
An image of Kelty Sine Women's 20 Degree Nylon Ripstop Sleeping Bag

Use the Kelty Sine Women's 20 Degree Nylon Ripstop Mummy Sleeping Bag to stay warm and cozy in the outdoors. This Kelty sleeping bag is lightweight and is ideal for hiking, so if weight is your priority this could be a great option. Tailored for women, it has more insulation at the feet and torso as women usually are naturally colder than men. It has a nylon ripstop exterior, which will resist wear and tear and potential holes or rips, and a nylon ripstop lining, which resists tearing due to thick reinforcement threads that are woven through the material. With a mummy shape, it is made with maximum warmth-to-weight ratio, since it is cut closely so there is no extra material, reducing the weight and making it more comfortable to carry on your back.

This Kelty sleeping bag features a pillow pocket, which can easily store small items such as a flashlight or other essentials. It is ideal for temperatures around 20°F, designed for warmth when outdoor temperatures are in the 20s or higher. It has a compressible design, which will fold up compactly, leaving you enough room for all your other equipment. This Kelty sleeping bag has a stuff sack and a mesh storage bag, which is the perfect fit for storing your bag or other loose items. It has a built-in pillowcase. It features Dridown technology, which creates a surface tension on the filaments of the down clusters, forcing the water molecules to simply bead up and roll off.

    Pros
    • Features a built-in pillowcase
    • Compresses easily
    • Stuff sack will keep you organized
    Cons
    • Mummy shape is only suitable for back sleepers
    • Stuff sack can ruin the sleeping bag's insulation after prolonged use
    • Women's sleeping bags do not always fit taller women
An image of Western Mountaineering UltraLite Royal Blue 20 Degree Single Lightweight Mummy Sleeping Bag

Looking for a great camping sleeping bag? We can tell you about the Western Mountaineering UltraLite 20 Degree Mummy Sleeping Bag. With a mummy shape, this Western Mountaineering sleeping bag is tight fitting to prevent cold air pockets. It is lightweight and works well for camping trips, giving you the necessary protection to comfortably sleep outdoors after the temperatures drop at night. This sleeping bag is ideal for temperatures around 20°F and is waterproof, resisting moisture and keeping you dry in damp conditions. It has a compressible design, which will fold up compactly, leaving you ample space for the rest of your essentials.

    Pros
    • Designed to compress easily
    • Lightweight build
    • Mummy shape provides high insulation
    Cons
    • Mummy shape restricts different sleeping positions
    • Camping sleeping bags are not suitable for hiking
An image of Alps Mountaineering Aura 20 Degree Polyester Sleeping Bag

You'll want to learn all about the Alps Mountaineering Aura 20 Degree Polyester Mummy Sleeping Bag to discover what sets it apart from all the other sleeping bags on the market. Featuring a mummy shape, this Alps Mountaineering sleeping bag is tight fitting to prevent cold air pockets. It is designed with a polyester lining and it is built with a nylon ripstop exterior, resisting typical wear and tear. This sleeping bag can withstand 20°F temperatures and is thermal, so you can stay warm every night. It is made to be compact and features a compressible design, giving you enough extra room to take along your other essentials. This sleeping bag is perfect for backpacking and is lightweight, making long days out on the trail easier to handle.

    Pros
    • Made to be compact
    • Features a compressible design
    • Lightweight build
    Cons
    • Polyester can stain easily
    • Mummy shape limits different sleeping positions
An image of Western Mountaineering UltraLite Royal Blue 20 Degree Single Lightweight 6 Ft. 6 in. Mummy Sleeping Bag

With an excellent user rating, the Western Mountaineering UltraLite 20 Degree Mummy Sleeping Bag might be just what you need for your next outdoor adventure. This Western Mountaineering sleeping bag is lightweight, making it great if your number one priority is low volume and weight. With a mummy shape, it is made with excellent warmth-to-weight ratio, since it is very fitted so there is no extra material, reducing the weight and making it more comfortable to carry on your back. It features a compressible design, so your sleeping bag will not take up a lot of room, leaving you with sufficient space to bring along your other equipment. It is waterproof and is suitable for temperatures around 20°F, providing you with the warmth you need when temperatures are above freezing.

    Pros
    • Made to compress easily
    • Lightweight construction
    • Mummy shape has excellent insulation
    Cons
    • Mummy shape does not have extra space to move around
What Else to Look For When Buying Your Next Lightweight 20 Degree Sleeping Bag:
Know the Difference Between the Kinds of Liner Materials for 20 Degree Lightweight Sleeping Bags
Polyester Sleeping Bags

Looking for a long-lasting sleeping bag? A sleeping bag with a polyester liner may be the solution you need. For your convenience, we recommend one of the great 20 degree lightweight sleeping bags that come with a polyester liner. These sleeping bags are designed to be hypoallergenic, so they are ideal for allergy sufferers. They are extremely durable, so they will remain in great shape over time. Polyester sleeping bags are breathable, allowing ample airflow so you don't end up overheating. They are easy to clean, so they can go many years before needing a complete wash. These sleeping bags dry quickly, reducing the overall amount of water trapped and absorbed by the material. Now that you know more about polyester, choose the perfect one for you here.

Down Sleeping Bags

There is only one 20 degree lightweight sleeping bag that has a down liner. Down sleeping bags are designed to be insulated, so they trap your body heat very well, keeping you warm regardless of the weather. They can be easily compressed, so they don't require a substantial amount of storage space if you're only taking a small bag. With great breathability, these down sleeping bags won't stick to your skin or make you feel overheated on warmer nights. They are very comfy, ensuring your child sleeps soundly after a long day adventuring in the outdoors. Perfect for extra cold nights in the woods, they will keep you snug and cozy. They are extremely durable, withstanding extended use and staying in excellent condition. Ready to pick out the right 20 degree lightweight sleeping bag for you? You can get started here.

Cotton Flannel Sleeping Bags

There is only one 20 degree lightweight sleeping bag that has a cotton flannel liner. Cotton flannel sleeping bags are designed to be hypoallergenic, so you can stay protected against irritation from allergens and chemicals while adventuring outdoors. They are very soft, ensuring comfort and rest, no matter the surface underneath. Designed for warmth, they will keep you snug and cozy. Cotton flannel sleeping bags are extremely durable to withstand wear and tear. Now that you're more familiar with cotton flannel, take a look here.

20 Degree Lightweight Sleeping Bags Are Available in the Following Sizes
Double Sleeping Bags

If you've been searching for a spacious and roomy 20 degree lightweight sleeping bag, then you should keep reading below to find out more about them. These sleeping bags are suitable for couples, making them great for cold weather getaways. Something to keep in mind is that they take up a bit more space, so they are less compact and harder to carry on your back. An advantage is that they have a design that is good for car camping, which makes them great for when you'll be reaching the campsite with your vehicle, and not by foot. Now that you know more about double sleeping bags, check out this great 20 degree lightweight sleeping bag.

Single Sleeping Bags

We found 23 different options for 20 degree lightweight sleeping bags that come in a single size to help you decide if this is the sleeping bag you want. 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 come with 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. Now that you are better informed about single sleeping bags, check out this highly rated 20 degree lightweight sleeping bag.

Number of Seasons a 20 Degree Lightweight Sleeping Bag Can Keep You Warm in
3 Season Sleeping Bags

With only one 20 degree lightweight sleeping bag out there, you'll want to act quick and check it out. These 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 taking on almost every season of the year. They are suitable for most conditions, except for when there may be frost or snow on the ground, so they are a very versatile option for those who know they won't be taking on hiking or camping excursions where sub-zero protection is a must. Now that you know about 3 season sleeping bags, check out this great 20 degree lightweight sleeping bag.

4 Season Sleeping Bags

If you want a 4 season sleeping bag that will withstand many outdoor adventures, then a sleeping bag for 4 seasons might be what you want. We looked at two 20 degree lightweight sleeping bags for 4 season use. 4 season sleeping bags feature an insulated hood that can be cinched down around your head, which prevents heat from radiating away, helping you remain warm when temperatures dip below freezing. They are suitable for all winter weather, so you can enjoy a blissful night's sleep, even if snow fall is in the forecast. One downside is that they are more expensive than 2 or 3 season sleeping bags, so they are more of a long-term investment. Now that you know more about 4 season sleeping bags, check out this great 20 degree lightweight sleeping bag.

2 Season Sleeping Bags

If you aren't planning on sleeping outdoors in the chillier months then there are three options available for 20 degree lightweight sleeping bags that are ideal for the warmer months of the year, like this great one. 2 season sleeping bags feature a lightweight design, which makes them great for hiking or traveling long distances by foot. They are good for warmer weather, so you can sleep through even the hottest nights. One downside is that they have the least amount of weather protection, which won't offer the necessary weather protection for extreme cold. A benefit is that they feature good ventilation features, which keep you nice and fresh inside, no matter the hot weather outside.