Best Large 40 Degree Sleeping Bags


Our review process

We've taken a look at more than 800 sleeping bags, including many different large 40 degree sleeping bags. We used our AI platform to rate each individual sleeping bag based on a number of data entries. These features range from the temperature rating and the number of seasons to type and weight. The following article will talk about large 40 degree sleeping bags in particular, of which we found 10. We hope that this guide will help you pick the best one for you.

We've reviewed large 40 degree sleeping bags and wanted to share some information with you. 40 degree sleeping bags should keep you comfortable down to 40°F. They are generally cheaper 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, so they are easy to unzip at the top if it's a humid or hot night. 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. Large sleeping bags are made from thicker materials than smaller and shorter sleeping bags, so they are very comfy and cozy to sleep in. They are very spacious, designed for taller campers and those that prefer a bit of extra shoulder and leg room.

Our Top Ranking Sleeping Bags:
Product NameBrandShapeLiner MaterialDimensionsSize
Best Overall Score
1
An image of Sea to Summit Ember I 073R-Parent Men's 40 Degree Nylon Sleeping Bag
Sea to Summit Ember I 073R-Parent Men's 40 Degree Nylon Sleeping Bag
Sea to Summit
barrel
nylon
5 ft. 10 in.
single
Runner Up
2
An image of Kelty Tuck 35425718RR 40 Degree Polyester Taffeta Sleeping Bag
Kelty Tuck 35425718RR 40 Degree Polyester Taffeta Sleeping Bag
Kelty
mummy
polyester taffeta
6 ft.
single
Best Affordable Option
3
An image of Coleman Sunridge Men's 40 Degree Polyester Sleeping Bag
Coleman Sunridge Men's 40 Degree Polyester Sleeping Bag
Coleman
rectangle
polyester
5 ft. 11 in.
single
For Cold Weather
4
An image of Coleman Green Valley 40 Degree Cotton Flannel Sleeping Bag
Coleman Green Valley 40 Degree Cotton Flannel Sleeping Bag
Coleman
rectangle
cotton flannel
5 ft. 11 in.
single
5
An image of Coleman Trinidad Kids 40 Degree Sleeping Bag
Coleman Trinidad Kids 40 Degree Sleeping Bag
Coleman
rectangle
5 ft. 11 in.
single
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Sea to Summit
Shape
barrel
Liner Material
nylon
Dimensions
5 ft. 10 in.
Size
single
Customer Rating
Brand
Kelty
Shape
mummy
Liner Material
polyester taffeta
Dimensions
6 ft.
Size
single
Customer Rating
Brand
Coleman
Shape
rectangle
Liner Material
polyester
Dimensions
5 ft. 11 in.
Size
single
Customer Rating
Brand
Coleman
Shape
rectangle
Liner Material
cotton flannel
Dimensions
5 ft. 11 in.
Size
single
Customer Rating
Brand
Coleman
Shape
rectangle
Liner Material
Dimensions
5 ft. 11 in.
Size
single
Best Overall Score
An image of Sea to Summit Ember I 073R-Parent Men's 40 Degree Nylon Sleeping Bag

With the Sea to Summit Ember I Men's 40 Degree Nylon Barrel Sleeping Bag, you can experience a great night's sleep while on your weekend getaway. This sleeping bag has a nylon lining and is made with a nylon ripstop shell, resisting typical wear and tear. It has a barrel shape, which is tapered from top to bottom to increase heat efficiency and save weight. It is lightweight and works well for hiking trips, so if weight is your priority this could be a great option. With a compressible design, it fits easily into a hiking backpack or overnight bag. This sleeping bag is ideal for temperatures around 40°F, keeping you warm on chilly summer nights. It is easy to pack, so it will conveniently roll up and fit into your bag. This Sea to Summit sleeping bag features a laundry bag and has a compression bag, which will make storing your sleeping bag super easy.

    Pros
    • Features a compressible design
    • Easy to pack sleeping bags roll up compactly
    • Lightweight build
    Cons
    • Nylon can fade easily
    • Barrel shaped sleeping bags can be hard to fit into a backpack
Runner Up
An image of Kelty Tuck 35425718RR 40 Degree Polyester Taffeta Sleeping Bag

Before purchasing the Kelty Tuck 40 Degree Polyester Taffeta Mummy Sleeping Bag, it's important to learn more about its different features. This Kelty sleeping bag has a polyester taffeta lining and a polyester exterior, which is light and comfortable. With a mummy shape, it is made for optimal warmth-to-weight ratio, since it is cut closely so there is no excess fabric, cutting down on the weight and making it easier to carry. This sleeping bag has ThermaPro insulation, which retains warmth by using ultra synthetic insulation. It is made to be compact and has a compressible design, giving you sufficient extra space to take along your other gear. It is equipped with a zipper guard, preventing the fabric from snagging in the zipper. This sleeping bag has a stuff sack, which takes up hardly any space and will make packing so much easier. The hood has drawstrings, so you can adjust the fit based on what feels most comfortable to you. This sleeping bag has a 40°F temperature rating, which is ideal for warm weather nights.

    Pros
    • Designed to be compact
    • Compresses easily
    • Zipper guard keeps the fabric from tearing
    Cons
    • Mummy shape has a tailored fit which may not be comfortable for every sleeper
    • Polyester shell is not great for extreme weather camping
    • Stuff sack can ruin the sleeping bag's insulation after prolonged use
Best Affordable Option
An image of Coleman Sunridge Men's 40 Degree Polyester Sleeping Bag

Looking for a sleeping bag on a budget? You'll want to hear about the Coleman Sunridge Men's 40 Degree Polyester Rectangular Sleeping Bag. This sleeping bag has a rectangular shape, which is spacious and offers more freedom of movement. It has a polyester exterior and a polyester lining, which is a synthetic material that is very durable and vibrant. Perfect for camping, it gives you insulation to comfortably sleep outdoors after the temperatures drop at night. It has a zipper guard, preventing the material from snagging when opening and closing the zipper. This sleeping bag has roll control and is made to be easy to pack, so it can be folded down into a practical size to save space in your bag. It features a 40°F temperature rating, keeping you warm on colder summer nights.

    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
For Cold Weather
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. With ComfortSmart technology, this sleeping bag includes multiple comfort and convenience features such as zipper technology and added cushioning around your face. It has a roll control tab and a quick cord, which is a no-tie mechanism that makes it easy for one person to pack 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
Additional Picks
An image of Coleman Trinidad Kids 40 Degree Sleeping Bag

If you're looking to buy a new sleeping bag for your kids, you will want to consider the highly rated Coleman Trinidad Kids 40 Degree Rectangular Sleeping Bag. This kids sleeping bag is smaller, with less space at the bottom of the sleeping bag, keeping it more insulated. This sleeping bag has a rectangular shape, so kids will have room to move around. It has a polyester shell, which is light and comfortable.

This sleeping bag is ideal for camping, offering cozy warmth without adding a lot of weight. With ComfortSmart technology, it includes multiple comfort and convenience features such as zipper technology and added cushioning around your kid's face. It can withstand 40°F temperatures, keeping your kids warm on colder summer nights. It is built for summer for increasing ventilation to keep you comfortable during warmer months.

This sleeping bag features a roll control tab, which keeps the sleeping bag in place while packing it up. It is made to be easy to pack, making it a wonderful option if mobility and space are your main concern. It has a quick cord, which is a no-tie mechanism making it easy to pack. It is machine washable and it is equipped with a zipper guard, keeping the fabric from snagging in the zipper.

    Pros
    • Can be machine washed
    • Quick cord makes it easy for one person to fold up the bag
    • Zipper guard prevents the material from tearing
    Cons
    • Rectangular shape is not very insulated
    • Camping sleeping bags are more difficult to carry than hiking bags
    • Polyester shell is not very durable
An image of Western Mountaineering MityLite Men's 40 Degree Down Sleeping Bag

Get a good night's sleep with the Western Mountaineering MityLite Men's 40 Degree Down Barrel Sleeping Bag. This Western Mountaineering sleeping bag has a barrel shape, which is tapered, increasing thermal efficiency while still giving you a comfortable amount of room to move around. It has a down lining and is designed with a nylon ripstop shell, so it lasts for a long period of time. Suitable for summer, it is built with a light design that increases airflow and ventilation, which is perfect for warmer weather. It has a 40°F temperature rating, keeping you warm on colder summer nights.

This sleeping bag detaches via zippers, so you can easily transform your double bag into two individual ones. Featuring a lightweight build, it is great if you want to save space and move fast,. It is made to be compact and 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. This sleeping bag is easy to carry, making it a wonderful option if mobility and packing space are your main concern.

    Pros
    • Made to be compact, getting rid of the bulk
    • Compresses easily
    • Lightweight build
    Cons
    • Down loses loft when wet
    • Barrel shaped sleeping bags can be hard to pack into a backpack
An image of Kelty Coromell 40 Degree Sleeping Bag

With the Kelty Coromell 40 Degree Barrel Sleeping Bag, you can experience a great night's sleep while on your weekend getaway. This sleeping bag has a barrel shape, which is fitted by your feet, while still loosely cut around the body so you can comfortably move from your back to your side at night. It features a polyester shell, which is light and comfortable. It is suitable for camping and is lightweight, making it great if your number one priority is low volume and weight. This sleeping bag detaches via zippers, so you can easily transform your double bag into two individual ones. It features a stuff sack, which will give you the perfect space to pack away your sleeping bag and any other small items. It can withstand 40°F temperatures, keeping you warm on colder summer nights.

    Pros
    • Stuff sack will keep you organized
    • Lightweight build
    • Polyester shell resists UV rays
    Cons
    • Barrel shaped sleeping bags can be bulky
    • Camping sleeping bags are not suitable for hiking
    • Polyester shell is not great for extreme weather conditions
An image of Coleman Willow Creek 2000004446 40 Degree Polyester 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 Coleman Willow Creek 40 Degree Polyester Rectangular Sleeping Bag. This Coleman sleeping bag has a rectangular shape, which is perfect for those who like a bit of extra room. With ComfortSmart technology, it includes various comfort and convenience features such as zipper technology and added cushioning around your face. It has a polyester lining, which is breathable and soft on your skin and does not get as hot as other materials once you're inside, and a polyester exterior, which will deflect UV light, shielding you from harmful sunlight. This Coleman sleeping bag can withstand 40°F temperatures, keeping you warm on chilly summer nights. Ideal for camping, it gives you the necessary protection to comfortably sleep outdoors after the temperatures drop at night. It has a plush bottom, so you won't feel the bumps on the ground beneath you. This Coleman sleeping bag is machine washable and features a roll control tab and a quick cord, designed for convenient one-person packing.

    Pros
    • Machine washable
    • Features a plush bottom
    • Quick cord designed for quick one-person packing
    Cons
    • Polyester traps moisture inside the sleeping bag
    • Rectangular shape is not very insulated
    • Camping sleeping bags are more difficult to carry than backpacking bags
An image of Coleman Autumn Glen 40 Degree Polyester Sleeping Bag

See all that nature has in store from the comfort and safety of the Coleman Autumn Glen 40 Degree Polyester Rectangular Sleeping Bag. This Coleman sleeping bag has a rectangular shape, so you will have plenty of room to move around. It has a polyester lining, which is light and comfortable on your skin and does not heat up as much as other fabrics once you're inside. With a lightweight build, it is great if you're planning on trekking or hiking long trails by foot. Made with Thermolock technology, it reduces heat loss through the zipper since it has an added layer of insulation along the opening. This sleeping bag has a zipper guard, preventing the material from snagging in the zipper. It includes an interior pocket, so you will have a place to easily stash your small essentials, such as a phone or a watch. It features a quick cord, has roll control, and is designed to be easy to pack, making it an excellent option if mobility and space are a key factor for you. This sleeping bag is ideal for temperatures around 40°F, keeping you warm on colder summer nights.

    Pros
    • Roll control tab keeps the sleeping bag in place
    • Zipper guard prevents the fabric from tearing
    • Features lightweight construction
    Cons
    • Polyester absorbs sweat
    • Rectangular shape is not very insulated
An image of Coleman Comfort-Cloud 2000025550 40 Degree Fleece Sleeping Bag

With a great user rating, the Coleman Comfort-Cloud 40 Degree Fleece Rectangular Sleeping Bag could be just what you need for your next trip. This sleeping bag has a rectangular shape, which is ideal for those who like room to stretch out. It has a fleece lining, which is synthetic, making it easy to wash and dry without wrinkling or shrinking the material. This sleeping bag has Thermotech insulation, which is a non-toxic, highly insulated, moisture-absorbent foam that is used to trap heat. It can withstand 40°F temperatures, keeping you warm on chilly summer nights.

This sleeping bag includes an interior pocket, so you will have a place to easily stash your possessions, such as a phone or a watch. It features a memory foam bottom, contouring to your body so you can enjoy the outdoors without having to sacrifice comfort. It is equipped with a zipper guard, keeping the material from getting caught when opening and closing the zipper. This sleeping bag has roll control, can be machine washed, and features a quick cord, which is a no-tie mechanism making it easy to fold.

    Pros
    • Features a memory foam bottom
    • Machine washable
    • Designed with a memory foam bottom
    Cons
    • Fleece traps heat and has bad airflow
    • Rectangular shape is not very insulated
Large 40 Degree Sleeping Bags: Additional Information to Help You Make Your Choice:
These Are Some of the Liner Materials to Keep in Mind for 40 Degree Sleeping Bags
Fleece Sleeping Bags

There is only one 40 degree sleeping bag that has a fleece liner. These sleeping bags are designed to be insulated, giving you extra protection from any nasty icy drafts. Perfect for chilly nights in the woods, they will keep you snug and cozy. They are designed with durable materials, withstanding extended long term use and remaining intact. Fleece sleeping bags are very comfy, so you'll wake up feeling well rested. They dry quickly, reducing the overall amount of moisture trapped and absorbed by the material. Now that you know more about fleece, take a look here.

Polyester Sleeping Bags

Are polyester sleeping bags the right choice for you? Take a look at this particular 40 degree sleeping bag with a polyester liner that we highly recommend. Polyester sleeping bags are naturally hypoallergenic, so you can stay protected against irritation from allergens and chemicals while taking on the outdoors. They are easy to clean, so they can last a long time before needing a complete wash. These polyester sleeping bags are extremely durable, withstanding extended long term use and remaining intact. They are breathable, causing the temperature inside your bag to remain stable and pleasant. They dry quickly, so when facing wet conditions, they hardly absorb any moisture.

Down Sleeping Bags

Are down sleeping bags the best fit for you? Take a look at this particular 40 degree sleeping bag with a down liner that we picked out for you. These down sleeping bags are designed to be insulated, so they retain your body heat very well, keeping you warm regardless of the weather. They can be easily compressed, giving you extra room for all the food and gear you need for your trip so you won't feel limited on space when packing. Down sleeping bags are designed with durable materials to withstand wear and tear. Made with breathable material, they won't stick to your skin and make you feel overheated on warmer nights. They are very comfy, ensuring your child receives a good night's sleep after a long day adventuring in the outdoors. Designed for warmth, they will keep you snug and cozy.

The Best Shape for Your 40 Degree Sleeping Bag
Barrel Sleeping Bags

Are you looking to buy a new all-purpose sleeping bag? We have three barrel sleeping bags available. Click here to take a look at one now. With a spacious design, barrel sleeping bags are optimal for those who like a bit of extra room to stretch out. They accommodate varying sleeping positions, giving you plenty of room to get comfortable, regardless of your sleeping position. These barrel sleeping bags are cut a bit closer than rectangular bags, providing better thermal efficiency than more spacious designs.

Rectangular Sleeping Bags

Trying to decide on the most fitting rectangle sleeping bag for you? We can help you make an informed decision by providing you with the important information that you need. With a spacious design, these sleeping bags are optimal for those who like a bit of extra room to stretch out. They accommodate varying sleeping positions, giving you plenty of room to get comfortable, regardless of your sleeping position. They come with double zippers, making them very versatile, doubling as a blanket or attaching to another sleeping bag for combined body heat on extra cold nights. Something to keep in mind is that they are not very heat-efficient, creating extra space inside which can weaken the bag's ability to keep you warm. Another downside is that they are quite heavy, so they aren't convenient for when weight is the top priority. With this information about rectangle sleeping bags, check out this 40 degree sleeping bag if you think it could be what you need.

Mummy Sleeping Bags

Are you looking to purchase a new sleeping bag to enhance warmth? We have six mummy sleeping bags available. Click here to have a look at one now. Mummy sleeping bags weigh less than rectangular bags, so they are best when you need maximum warmth and minimal weight. One downside is that they provide less space to move around, making them uncomfortable 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.