Best Marmot 40 Degree Sleeping Bags


Our review process

We've taken a look at hundreds of sleeping bags, including many different Marmot 40 degree sleeping bags. We used our advanced machine learning platform to score each individual sleeping bag based on several data entries. These features range from liner material and number of seasons to type and weight. The following article will discuss Marmot 40 degree sleeping bags in particular, of which we found 5. We hope that this guide will help you pick the best one for you.

When it comes to buying a Marmot 40 degree sleeping bag, you'll want to know what makes this brand different from others. Marmot is an acclaimed American brand that was established in 1974. Marmot designs many types of sleeping bags, committing to provide shoppers with versatile and high quality outdoor products. With the option of buying sleeping bags from a store or a website, Marmot offers you the best of both worlds, whether you like shopping from the convenience of your home or prefer testing the options out yourself. Marmot sells more expensive sleeping bags, so they are a great choice if you are searching for a high-quality product that will last a while. It is very innovative, performing rigorous testing to ensure they meet EN standard ratings, allowing more accurate comparisons between sleeping bags. Developing innovative technology, such as EVODry, Gore-Tex, Marmot Guardian, and M Softshells, Marmot is at the forefront of making more durable, insulated, and comfortable sleeping bags. Marmot sleeping bags are made using recyclable materials. Having won the Backpacker Editor's Choice 2008 Gold Award, Marmot is always striving to make exceptional quality products for its customers. The company has award-winning products such as the Marmot Ultralight Down sleeping bag, which is well-reviewed by consumers. Marmot is one of the largest sleeping bag companies. The company specializes in making outdoor apparel, jackets, children apparel, luggage, tents, and camping accessories in addition to sleeping bags. Now that you've heard all about Marmot, you'll want to hear all about Marmot 40 degree sleeping bags.

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 great for warm weather trips, so you won't feel stuffy and uncomfortable if a hot front comes through. 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 they'll keep you warm on those chilly summer or fall nights, without weighing you down.

Our Top Ranking Sleeping Bags:
Product NameShapeUserColorWeightLiner Material
Best Overall Score
1
An image of Marmot Voyager 45 Men's 40 Degree Sleeping Bag
Marmot Voyager 45 Men's 40 Degree Sleeping Bag
mummy
men
sapphire
Runner Up
2
An image of Marmot Voyager 45 900718-2772 Men's 40 Degree Polyester Sleeping Bag
Marmot Voyager 45 900718-2772 Men's 40 Degree Polyester Sleeping Bag
mummy
men
sapphire
1.81
polyester
For Cold Weather
3
An image of Marmot NanoWave 45 21480-6278-L 40 Degree Polyester Sleeping Bag
Marmot NanoWave 45 21480-6278-L 40 Degree Polyester Sleeping Bag
mummy
red
2.2
polyester
4
An image of Marmot Axiom 40 Degree Nylon Sleeping Bag
Marmot Axiom 40 Degree Nylon Sleeping Bag
mummy
red and fog
nylon
5
An image of Marmot NanoWave 45 21460-6278-Reg-LFT Men's 40 Degree Polyester Taffeta Sleeping Bag
Marmot NanoWave 45 21460-6278-Reg-LFT Men's 40 Degree Polyester Taffeta Sleeping Bag
rectangle
men
red
2
polyester taffeta
Our Top Ranking Sleeping Bags
Customer Rating
Shape
mummy
User
men
Color
sapphire
Weight
Liner Material
Customer Rating
Shape
mummy
User
men
Color
sapphire
Weight
1.81
Liner Material
polyester
Customer Rating
Shape
mummy
User
Color
red
Weight
2.2
Liner Material
polyester
Customer Rating
Shape
mummy
User
Color
red and fog
Weight
Liner Material
nylon
Customer Rating
Shape
rectangle
User
men
Color
red
Weight
2
Liner Material
polyester taffeta
Best Overall Score
An image of Marmot Voyager 45 Men's 40 Degree Sleeping Bag

Choose the Marmot Voyager 45 Men's 40 Degree Mummy Sleeping Bag to stay warm in the outdoors. This sleeping bag 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. Featuring a mummy shape, it is made with maximum warmth-to-weight ratio, since it is very fitted so there isn't extra material, reducing the weight and making it more comfortable to carry on your back. It has a polyester exterior, which deflects UV light, preventing the color from fading.

This sleeping bag features a compressible design, which will fold up very small, giving you ample space for the rest of your gear. It is ideal for temperatures around 40°F and is waterproof, making it a good fit for wet conditions. This sleeping bag has Spirafil insulation, which combines large, hollow fibers with small, polyester fibers to create a unique blend of durability, warmth, and comfort. It features a mummy-style hood, which fits snugly over your head, helping keep you warm by trapping body heat. It comes with a two-way zipper and a stuff sack for easily fitting your sleeping bag into your backpack with the rest of your equipment.

    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
Runner Up
An image of Marmot Voyager 45 900718-2772 Men's 40 Degree Polyester Sleeping Bag

Let's review the Marmot Voyager 45 Men's 40 Degree Polyester Mummy Sleeping Bag, rated highly by online shoppers. This sleeping bag has a polyester exterior, which resists UV light, protecting you from harmful sun rays, and a polyester lining, which is light and soft on your skin and does not get as hot as other materials during the night. With a mummy shape, it is made with maximum warmth-to-weight ratio, since it is fitted so there is no excess material, cutting down on the weight and making it easier to carry on your back. It features Spirafil insulation, which mixes large, hollow fibers with small, polyester fibers to create a blend of durability, warmth, and softness. Perfect for backpacking, it won't add noticeable weight to your bag while you're taking on the outdoors. This sleeping bag has a compressible design, giving you enough extra space to take along your other gear. It features a stuff sack and a two-way zipper, so you can conveniently control the airflow inside the sleeping bag. This sleeping bag is ideal for temperatures around 40°F and is waterproof, resisting moisture and keeping you dry in damp conditions.

    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
For Cold Weather
An image of Marmot NanoWave 45 21480-6278-L 40 Degree Polyester Sleeping Bag

Let's review the Marmot NanoWave 45 40 Degree Polyester Mummy Sleeping Bag, rated highly by online shoppers. With a mummy shape, this Marmot sleeping bag is fitted to prevent cold air pockets. It is lightweight and is ideal for hiking, so if weight is your priority this could be a great option. This sleeping bag features a polyester lining and a polyester exterior, which resists UV light, shielding you from damaging sun rays.

This sleeping bag features a 40°F temperature rating, keeping you warm on colder summer nights. It has a zipper guard, preventing the material from getting caught in the zipper. It detaches via zippers, so you can easily transform your double bag into two individual ones. This sleeping bag has a compressible design, so you can fold it into your backpack and it will give you sufficient space to take along other gear. It has a stuff sack, which is the perfect size to store your sleeping bag and any other small items conveniently. It features Spirafil insulation, which mixes large, hollow fibers with small, polyester fibers to create a blend of durability, warmth, and comfort.

    Pros
    • Made to compress easily
    • Zipper guard prevents the material from catching
    • Stuff sack provides space to store small items
    Cons
    • Polyester absorbs sweat
    • Mummy shape is close fitting with no extra space to move
    • Polyester exterior is not very durable
Additional Picks
An image of Marmot Axiom 40 Degree Nylon 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 Marmot Axiom 40 Degree Nylon Mummy Sleeping Bag. Featuring a mummy shape, this Marmot sleeping bag is fitted to prevent cold air pockets. It has a nylon lining, which feels light and soft and will remain at a comfortable temperature. This Marmot sleeping bag can withstand 40°F temperatures, keeping you warm on chilly summer nights.

Featuring a lightweight build, this sleeping bag is great if you're planning on trekking or hiking long trails by foot. The hood is designed with a mummy style, so it will keep your head and neck very warm, since only your mouth and nose will be left exposed. This Marmot sleeping bag is equipped with a zipper guard, keeping the material from snagging when opening and closing the zipper. It has a stuff sack, designed for easily fitting your sleeping bag into your backpack along with the rest of your equipment.

    Pros
    • Zipper guard prevents the material from tearing
    • Mummy-style hood provides extra comfort by the head
    • Stuff sack stores sleeping bags compactly
    Cons
    • Nylon will pill with extended use
    • Mummy shape is very fitted with no extra room to move
    • Stuff sack can ruin the sleeping bag's filling if used for too long
An image of Marmot NanoWave 45 21460-6278-Reg-LFT Men's 40 Degree Polyester Taffeta Sleeping Bag

Use the Marmot NanoWave 45 Men's 40 Degree Polyester Taffeta Rectangular Sleeping Bag to stay warm in the outdoors. This sleeping bag features a polyester shell, which deflects 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 has a rectangular shape, allowing you to sleep on your side, back, or stomach without feeling restricted. This sleeping bag is ideal for camping and is lightweight, making long days out on the trail easier to tackle. It has Spirafil insulation, which combines large, hollow fibers with small, polyester fibers to create a unique blend of durability, warmth, and softness. It features a compressible design and is made to be compact, so you can travel comfortably without bulk. This Marmot sleeping bag can withstand 40°F temperatures, keeping you warm on chilly summer nights. It features a stuff sack and a two-way zipper, so you can easily control the airflow while you sleep. The hood is designed with drawstrings, so you can adjust the tightness based on what feels most comfortable to you.

    Pros
    • Folds up compactly
    • Features a compressible design
    • Drawstring hood provides added comfort by the head
    Cons
    • Rectangular shape is heavier than other shapes
    • Camping sleeping bags are bulkier than backpacking bags
    • Polyester exterior is not suitable for extreme weather conditions
More Things You Should Know When Buying a New Marmot 40 Degree Sleeping Bag:
These Are Some of the Different Liner Materials to Keep in Mind for Marmot 40 Degree Sleeping Bags
Polyester Sleeping Bags

There is only one Marmot 40 degree sleeping bag that has a polyester liner. These 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 easy to clean, so with just a damp cloth and a little soap you can keep them in great shape. They are breathable, allowing the temperature inside your bag to stay comfortable and balanced. Polyester sleeping bags are designed with durable materials, providing a consistent level of warmth for a longer period of time. They dry quickly, reducing the overall amount of moisture trapped and absorbed by the material. Now that you're more familiar with polyester, choose the right one for you here.

Nylon Sleeping Bags

We found two awesome Marmot 40 degree sleeping bags that have a nylon liner to help you decide if this is the right material you want. Nylon sleeping bags are very comfortable, so you'll wake up feeling well rested. They are easy to clean, so they can last a long time before needing a complete wash. They are designed with durable materials, so you can go years before needing to replace them. Nylon sleeping bags dry quickly, so even in the wettest conditions, they hardly absorb any moisture. They are designed to be lightweight, so no matter the hike, they won't weigh you down. Now that you know a bit more about nylon, take a look here.

Polyester Taffeta Sleeping Bags

Looking for a long-lasting sleeping bag? A sleeping bag with a polyester taffeta liner may be the solution you need. To help you in your decision, we recommend one of the great Marmot 40 degree sleeping bags that come with a polyester taffeta liner. These sleeping bags are very comfortable, ensuring comfort and rest, so you'll sleep happier than in your own bed. They are breathable, so whether it's a colder or warmer night, you'll feel comfortable sleeping in a variety of outdoor temperatures. Ready to pick out the right Marmot 40 degree sleeping bag for you? Get started here.

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

Trying to pick the perfect rectangle sleeping bag for you? We can help you decide by giving you the information that you need. Featuring a spacious design, rectangular sleeping bags are optimal for those who like a bit of extra room to stretch out. They have double zippers, which allow you to turn the bag into a flat blanket, for warmer nights. These sleeping bags accommodate varying sleeping positions, giving you plenty of room to get comfortable, regardless of your sleeping position. Something to keep in mind is that they are quite heavy, so they are often bulkier and less comfortable to carry long distances. Also, they are not very heat-efficient, creating more room inside which can weaken the bag's ability to keep you warm. Decided on which shape is right for you? Then why not have a look at this great option.

Mummy Sleeping Bags

Trying to choose the right mummy sleeping bag for your next outdoor adventure? We will help you make an informed decision by giving you the pros and cons. Mummy sleeping bags weigh less than rectangular bags, so they are best when you need maximum warmth for minimal weight. They are good for cold weather, so they are designed to hold in warmth and seal out drafts. Something to keep in mind is that they provide less space to move around, making them uncomfortable for sleepers who toss and turn. Think you know which shape is perfect for you? Then check out this fantastic option.