Reviewing Cheap 40 Degree Sleeping Bags


Our review process

We've taken a look at hundreds of sleeping bags, including many different cheap 40 degree sleeping bags. We used our advanced artificial intelligence algorithm to rate 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 article will talk about cheap 40 degree sleeping bags in particular, of which we found 17. We hope that this guide will help you in your choice.

When trying to choose your next cheap 40 degree sleeping bag, we think there are important things you'll want to know about. 40 degree sleeping bags should keep you comfortable down to 40°F. They are more affordable than sub-zero degree bags, so you can buy one without feeling worried about going over your budget. They are perfect for warm weather trips, providing comfortable ventilation and breathability for hotter nights. 40 degree sleeping bags open completely, allowing you to unzip them for ventilation on warm nights. They are typically lighter, so although they don't protect against the most extreme weather they are easier to pack and will contribute to less overall weight you have to carry.

Our Top Ranking Sleeping Bags:
Product NameBrandShapeUserSize
Best Overall Score
1
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
mummy
men
single
Runner Up
2
An image of Coleman Girls 40 Degree Polyester Sleeping Bag
Coleman Girls 40 Degree Polyester Sleeping Bag
Coleman
rectangle
girls
single
For Cold Weather
3
An image of Coleman 2000025288 Kids 40 Degree Sleeping Bag
Coleman 2000025288 Kids 40 Degree Sleeping Bag
Coleman
rectangle
kids
single
For Backpacking
4
An image of Marmot Voyager 45 Men's 40 Degree Sleeping Bag
Marmot Voyager 45 Men's 40 Degree Sleeping Bag
Marmot
mummy
men
5
An image of Slumberjack Latitude Lat40 Men's 40 Degree Sleeping Bag
Slumberjack Latitude Lat40 Men's 40 Degree Sleeping Bag
Slumberjack
mummy
men
single
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Slumberjack
Shape
mummy
User
men
Size
single
Customer Rating
Brand
Coleman
Shape
rectangle
User
girls
Size
single
Customer Rating
Brand
Coleman
Shape
rectangle
User
kids
Size
single
Customer Rating
Brand
Marmot
Shape
mummy
User
men
Size
Customer Rating
Brand
Slumberjack
Shape
mummy
User
men
Size
single
Best Overall Score
An image of Slumberjack Boundary 51726215LL Men's 40 Degree Polyester Taffeta Sleeping Bag

Use the Slumberjack Boundary Men's 40 Degree Polyester Taffeta Mummy Sleeping Bag to stay warm and cozy in the outdoors. This sleeping bag has a polyester taffeta lining and a polyester shell, which is light and comfortable. Featuring a mummy shape, it is made for optimal warmth-to-weight ratio, since it is cut closely so there isn't extra fabric, cutting down on the weight and making it easier to carry. This sleeping bag has Slumberloft™ synthetic insulation, which will keep you warm with the use of polyester fibers. It has a stuff sack, which will give you the perfect space to pack away your sleeping bag and any other small items. It features a 40°F temperature rating, which is ideal for warm weather nights.

    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
Runner Up
An image of Coleman Girls 40 Degree Polyester Sleeping Bag

If you're looking for a sleeping bag for your kids, you will want to consider the highly rated Coleman Girls 40 Degree Polyester Rectangular Sleeping Bag. This Coleman sleeping bag is made for girls, featuring a stylish design while keeping your children comfortable and warm. It has a rectangular shape, which is built with extra space, so kids can comfortably move around in a variety of sleeping positions. It has a polyester shell, which is light and comfortable, and a polyester lining, which is light, comfortable, and does not get as hot as other fabrics during the night.

This Coleman sleeping bag features a 40°F temperature rating, which is great for warm weather nights. It works well for camping trips, offering cozy warmth without adding a lot of weight. Made with Thermolock technology, it prevents heat loss through the zipper since it has an extra layer of insulation along the opening. It has a stuff sack, designed for easily fitting your kid's sleeping bag into their backpack along with the rest of their gear. It is equipped with a zipper guard, keeping the fabric from snagging in the zipper.

    Pros
    • Zipper guard prevents the fabric from tearing
    • Stuff sack will keep your backpack organized
    • Polyester lining is strong and colorfast
    Cons
    • Polyester can stain easily
    • Rectangular shape is heavier than other shapes
    • Camping sleeping bags are bulkier than backpacking bags
For Cold Weather
An image of Coleman 2000025288 Kids 40 Degree Sleeping Bag

If you're looking for a sleeping bag for your kids, you will want to consider the highly rated Coleman Kids 40 Degree Rectangular Sleeping Bag. Great for kids, this sleeping bag provides warmth and comfort for your children as the shape is tailored to their smaller size. It has a rectangular shape, which is built with extra space, so kids can move comfortably in their sleep. It works well for camping trips, offering cozy warmth and good compressibility. This sleeping bag can withstand 40°F temperatures, keeping your kids warm on colder summer nights. It has Thermotech insulation, which is constructed from a low-density foam, which is non-toxic, very insulated, and moisture-absorbent.

This sleeping bag has a stuff sack, designed for easily fitting your kid's sleeping bag into their backpack along with the rest of their equipment. It features a glow in the dark design, which makes sleeping in the outdoors all the more fun. It features a roll control tab, which keeps the sleeping bag straight while packing it up. It is equipped with a zipper guard, preventing the material from getting caught in the zipper. With an interior pocket, it has a handy place to store small objects, such as glasses or a flashlight.

    Pros
    • Zipper guard prevents the fabric from tearing
    • Stuff sack will keep your backpack organized
    • Kids design is easy to transport
    Cons
    • Rectangular shape is not very insulated
    • Camping sleeping bags are more difficult to carry than backpacking bags
    • Stuff sack can damage the sleeping bag's filling if used for too long
For Backpacking
An image of Marmot Voyager 45 Men's 40 Degree Sleeping Bag

Trying to find a sleeping bag on a budget? You'll want to know about the Marmot Voyager 45 Men's 40 Degree Mummy Sleeping Bag. With a mummy shape, this Marmot sleeping bag is fitted to prevent warm air from escaping. It features Spirafil insulation, which mixes large, hollow fibers with small, polyester fibers to create a blend of durability, warmth, and comfort. This sleeping bag can withstand 40°F temperatures and is waterproof, making it a good fit for wet environments. It has a polyester shell, which will resist UV light, protecting you from harmful sunlight.

With a mummy style, the hood will keep your head and neck extremely warm, since the cut leaves only your mouth and nose exposed. This Marmot sleeping bag features a compressible design, leaving you enough extra space to take along your other essentials. It is perfect for hiking, so if you don't want to carry a lot of weight this could be a great choice for you. It features a stuff sack and a two-way zipper, so you can easily control the temperature while you sleep.

    Pros
    • Made to compress easily
    • Mummy-style hood traps body heat
    • Two-way zipper provides airflow by your feet
    Cons
    • Mummy shape is only suitable for back sleepers
    • Polyester exterior is not very durable
Additional Picks
An image of Slumberjack Latitude Lat40 Men's 40 Degree Sleeping Bag

Looking for a sleeping bag on a budget? We can tell you about the Slumberjack Latitude Men's 40 Degree Mummy Sleeping Bag. With a mummy shape, this Slumberjack sleeping bag is tight fitting to prevent warm air from escaping. It works well for camping trips, offering cozy warmth without adding a lot of weight. This sleeping bag features Slumberloft™ synthetic insulation, which utilizes polyester fibers to keep you warm and insulated in your sleeping bag. It features a zipper guard, keeping the fabric from snagging in the zipper. It has a stuff sack for conveniently fitting your sleeping bag into your backpack along with the rest of your equipment. This sleeping bag has a 40°F temperature rating, which is ideal for warm weather nights.

    Pros
    • Zipper guard keeps the fabric from tearing
    • Stuff sack provides a spot to stash small items
    • Mummy shape has excellent insulation
    Cons
    • Mummy shape has a tight fit which can be uncomfortable for some people
    • Camping sleeping bags are not suitable for backpacking
    • Stuff sack can damage the sleeping bag's filling if used for too long
An image of Coleman Plum Fun 2000019645 Kids 40 Degree Sleeping Bag

If you're looking to buy a sleeping bag for your kids, you will want to consider the highly rated Coleman Plum Fun Kids 40 Degree Sleeping Bag. This kids Coleman sleeping bag will keep your kids warmer since it is smaller and easier for their body heat to circulate. This Coleman sleeping bag can withstand 40°F temperatures, keeping your kids warm on colder summer nights. It features Thermotech insulation, which is a non-toxic, very insulated, moisture-absorbent foam that is used to trap heat. It features a plush bottom, so your kids won't feel the hard ground beneath them. It works well for camping trips, offering cozy warmth without adding a lot of weight.

This Coleman sleeping bag is easy to pack, so it will fold up easily and neatly. It has a quick cord, which is a no-tie closure making it easy to fold. It has a roll control tab, which keeps the sleeping bag in place while packing it up. It is equipped with a zipper guard, keeping the fabric from snagging in the zipper. Equipped with an interior pocket, it has a convenient spot to store important essentials, such as glasses or a flashlight.

    Pros
    • Features a plush bottom
    • Roll control tab keeps the sleeping bag straight
    • Zipper guard prevents the material from snagging
    Cons
    • Camping sleeping bags are not suitable for backpacking
    • Kids will grow out of their children's sleeping bag
An image of Coleman Sunridge Men's 40 Degree Polyester Sleeping Bag

Looking for an affordable sleeping bag? We can tell you about the Coleman Sunridge Men's 40 Degree Polyester Rectangular Sleeping Bag. This sleeping bag has a polyester lining, which is a synthetic material that is very strong and vibrant, and a polyester shell, which will resist UV light, protecting you from damaging sunlight. It is ideal for camping, giving you the necessary protection to comfortably sleep outdoors after the temperatures drop at night. This sleeping bag has a rectangular shape, which is spacious and offers more freedom of movement. It has a zipper guard, keeping the material from getting caught when opening and closing the zipper. This sleeping bag is ideal for temperatures around 40°F, keeping you warm on colder summer nights. It is made to be easy to pack, making it an excellent option if mobility and space are a key factor for you and it also has a roll control tab, which keeps the sleeping bag straight while packing it up.

    Pros
    • Roll control tab keeps the sleeping bag straight
    • Zipper guard prevents the material from ripping
    • Polyester lining is durable and colorfast
    Cons
    • Polyester can get dirty easily
    • Rectangular shape is not the warmest option
    • Camping sleeping bags are not suitable for hiking
An image of Coleman Green Valley 40 Degree Cotton Flannel Sleeping Bag

You'll want to learn all about the Coleman Green Valley 40 Degree Cotton Flannel Rectangular Sleeping Bag to discover what sets it apart from all the other sleeping bags on the market. This Coleman sleeping bag is suitable for camping, offering cozy warmth without adding a lot of weight. It has a rectangular shape, allowing you to sleep on your side, back, or stomach without feeling restricted. This sleeping bag features a polyester exterior and a cotton flannel lining, which allows for airflow and has wicking properties that takes wetness away from the body.

This Coleman sleeping bag is equipped with a zipper guard, keeping the fabric from getting caught in the zipper. It is ideal for temperatures around 40°F, keeping you warm on chilly summer nights. Designed with ComfortSmart technology, it includes various comfort and convenience features such as zipper technology and added cushioning around your face. It has a quick cord and a roll control tab, which keeps the sleeping bag straight while packing it up.

    Pros
    • Quick cord for quick one-person packing
    • Zipper guard keeps the fabric from tearing
    • Cotton flannel lining allows for airflow
    Cons
    • Rectangular shape is not very insulated
    • Camping sleeping bags are bulkier than hiking bags
    • Polyester shell is not great for extreme weather camping
An image of Slumberjack Cub 52729712SR Boys 40 Degree Sleeping Bag

If you're looking for a sleeping bag for your kids, you will want to consider the highly rated Slumberjack Cub Boys 40 Degree Rectangular Sleeping Bag. This boys Slumberjack sleeping bag is a stylish, shorter option with less space at the foot of the sleeping bag, keeping it more insulated. This Slumberjack sleeping bag has a rectangular shape, so kids will have room to move around. It is equipped with a built-in pillowcase.

This Slumberjack sleeping bag can withstand 40°F temperatures, keeping your kids warm on colder summer nights. It has Slumberloft™ synthetic insulation, which utilizes polyester fibers to create a high level of insulation. This Slumberjack sleeping bag has a stuff sack, which will give your kids the perfect space to pack away their sleeping bag and any other small items. Featuring a pillow pocket, it has a convenient spot to store small essentials, such as a teddy bear or a book. It has a zipper guard, preventing the fabric from snagging in the zipper.

    Pros
    • Features a built-in pillowcase
    • Zipper guard keeps the fabric from snagging
    • Stuff sack provides a place to store small items
    Cons
    • Rectangular shape is not very insulated
    • Stuff sack can ruin the sleeping bag's insulation after prolonged use
An image of Marmot Voyager 45 900718-2772 Men's 40 Degree Polyester Sleeping Bag

Get a good night's sleep with the Marmot Voyager 45 Men's 40 Degree Polyester Mummy Sleeping Bag. This sleeping bag has a mummy shape, which is wider on top and more fitted on the bottom, keeping warm air close to your body. It works well for hiking trips, so if weight is your priority this could be a great option. It has a polyester shell and a polyester lining, which is breathable and comfortable on your skin and does not heat up as much as other materials during the night.

This Marmot sleeping bag has a compressible design, so you can fold it into your backpack and it will give you sufficient room to bring along other gear. It has a 40°F temperature rating and is waterproof, resisting moisture and keeping you dry in rainy conditions. This sleeping bag has Spirafil insulation, which mixes large, hollow fibers with small, polyester fibers to create a blend of loft, warmth, and softness. It features a stuff sack and has a two-way zipper, so you can easily control the temperature while you sleep.

    Pros
    • Designed to compress easily
    • Stuff sack provides a spot to store small items
    • Polyester lining is durable and colorfast
    Cons
    • Polyester stains easily
    • Mummy shape limits different sleeping positions
    • Polyester exterior is not very durable
What Else to Look For When Buying Your Next Cheap 40 Degree Sleeping Bag:
Number of Seasons a Cheap 40 Degree Sleeping Bag Can Keep You Warm in
4 Season Sleeping Bags

Passionate about camping outdoors even during the winter months? There is one cheap 40 degree sleeping bag available providing weather protection for every season. These sleeping bags come with an insulated hood that can be cinched in, providing you with even more warmth. However, they feature 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. An advantage is that they are suitable for all winter weather, so you won't have the cold as an excuse for keeping you back from exploring the outdoors. Now that you know about 4 season sleeping bags, check out this great cheap 40 degree sleeping bag.

2 Season Sleeping Bags

Looking for a sleeping bag for the warmer months? We recommend a 2 season sleeping bag. To help you decide, we think you should take a look at this cheap 40 degree sleeping bag on the market today. These sleeping bags feature a lightweight design, so if you're worried about carrying too much weight, they could be a great option for you. They are good for warmer weather, so you won't wake up in a sweat on hot nights. Something to keep in mind is that they have the least amount of weather protection, which won't offer the necessary weather protection for cold outdoor temperatures. On the other hand, they have good ventilation features, which keep you nice and cool inside, no matter the hot climate outside. If you think that you want to get a cheap 40 degree sleeping bag for 2 season use, check out this awesome one.

Cheap 40 Degree Sleeping Bags Come in Various Kinds of Liner Materials
Polyester Sleeping Bags

There is only one cheap 40 degree sleeping bag available that has a polyester liner. Polyester sleeping bags are designed to be hypoallergenic, so they are ideal for allergy sufferers. They are extremely durable, so they will not lose their insulation over time. They are breathable, allowing the temperature inside your bag to remain comfortable and balanced. These 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.

Cotton Flannel Sleeping Bags

Are cotton flannel sleeping bags the right choice for you? Take a look at this particular cheap 40 degree sleeping bag with a cotton flannel liner that we picked out for you. 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 designed with durable materials, so they will not lose their insulation over time. They are very soft, so you'll wake up feeling well rested. They are designed for warmth, so fear of the cold won't keep you from an epic outdoor adventure.

Microfiber Sleeping Bags

We looked at three great cheap 40 degree sleeping bags that have a microfiber liner to help you decide if this is the right material you want. Microfiber sleeping bags are breathable, so heat is distributed evenly, making them suitable for unpredictable weather. They are very soft, so you don't have to suffer sleeping in the outdoors. Ready to choose the right cheap 40 degree sleeping bag for you? You can get started here.

Choosing the Perfect Shape for Cheap 40 Degree Sleeping Bags
Rectangular Sleeping Bags

Trying to choose the most fitting rectangle sleeping bag for you? We'll help you make your decision by providing you with the important information that you need. Rectangular sleeping bags have a roomy design, so they are good for people who feel too claustrophobic by the tight mummy shape. They accommodate varying sleeping positions, making them ideal for people who are particular about sleeping in certain positions such as their sides or stomach. They come with double zippers, so they can double as a quilt. However, they are quite heavy, so they aren't suitable for when weight is the top priority. Moreover, they are not very heat-efficient, creating extra space inside which can weaken the bag's ability to keep you warm. Think you know which shape is perfect for you? Then why not have a look at this fantastic choice.

Mummy Sleeping Bags

Trying to pick the most suitable mummy sleeping bag for you? We'll help you make up your mind by giving you some information that you need. Mummy sleeping bags weigh less than rectangular bags, so they are best when you need maximum warmth and minimal weight. Ideal for cold weather, they are good for cold weather, providing maximum warmth, since their tight fitting cut is designed to trap body heat. However, they provide less space to move around, making them uncomfortable for sleepers who toss and turn. Decided on which shape is perfect for you? Then check out this fantastic product.