Best Down Summer Sleeping Bags


Our review process

Our team has collected, researched, and analyzed information on over 800 various types of sleeping bags in order to recommend our highest scoring sleeping bags. We then further sub-categorized them and looked more specifically at 5 different down summer sleeping bags. In our research, we took into consideration a variety of different main features among the 28,000 different data entries and combined it with customer reviews to inform you of the leading down summer sleeping bags available. But don't just take our word for it, check out some of the pros and cons of some of the main specs.

Are you buying a new down summer sleeping bag? Here are some things you should know. Down sleeping bags are designed to be insulated, giving you extra protection from any nasty icy drafts. They are designed with durable materials, so you can go years before having to replace them. Made with breathable material, they won't stick to your skin or leave you feeling overheated on warmer nights. Down sleeping bags can be easily compressed, making it ideal for minimalist packers. They are very soft, so you don't have to suffer sleeping in the outdoors. Perfect for extra cold nights in the woods, they will keep you snug and cozy. They are an affordable option for your next trip outdoors, saving you some money while still providing exceptional quality. Summer sleeping bags have a lighter design, which will leave you plenty of extra room to bring other equipment. They are designed with multiple ventilation options, so the upper part can be folded down if you get overheated.

Our Top Ranking Sleeping Bags:
Product NameBrandShapeDimensionsColorWeight
Best Overall Score
1
An image of Sea to Summit Trek Tk I Women's Down Sleeping Bag
Sea to Summit Trek Tk I Women's Down Sleeping Bag
Sea to Summit
mummy
5 ft. 7 in.
Runner Up
2
An image of Marmot Always Summer Down Sleeping Bag
Marmot Always Summer Down Sleeping Bag
Marmot
mummy
red
For Backpacking
3
An image of Sea to Summit Trek Tk II Down Sleeping Bag
Sea to Summit Trek Tk II Down Sleeping Bag
Sea to Summit
rectangle
6 ft.
2
4
An image of Marmot Never Winter Down Sleeping Bag
Marmot Never Winter Down Sleeping Bag
Marmot
mummy
cilantro and tree green
2.01
5
An image of Western Mountaineering MityLite Men's 40 Degree Down Sleeping Bag
Western Mountaineering MityLite Men's 40 Degree Down Sleeping Bag
Western Mountaineering
barrel
6 ft. 3 in.
moss green
1.1
Our Top Ranking Sleeping Bags
Customer Rating
Brand
Sea to Summit
Shape
mummy
Dimensions
5 ft. 7 in.
Color
Weight
Customer Rating
Brand
Marmot
Shape
mummy
Dimensions
Color
red
Weight
Customer Rating
Brand
Sea to Summit
Shape
rectangle
Dimensions
6 ft.
Color
Weight
2
Customer Rating
Brand
Marmot
Shape
mummy
Dimensions
Color
cilantro and tree green
Weight
2.01
Customer Rating
Brand
Western Mountaineering
Shape
barrel
Dimensions
6 ft. 3 in.
Color
moss green
Weight
1.1
Best Overall Score
An image of Sea to Summit Trek Tk I Women's Down Sleeping Bag

If you're looking to buy a sleeping bag, you will want to consider the Sea to Summit Trek Tk I Women's Down Mummy Sleeping Bag. This sleeping bag is perfect for camping and is lightweight, making it great if your number one priority is low volume and weight. Great for women, it has extra padding at the feet and torso as women usually are naturally colder than men. 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 is made with a nylon ripstop exterior and features a down lining, lasting for many years with the proper upkeep.

This Sea to Summit sleeping bag includes an interior pocket, so you will have a place to conveniently stash your possessions, such as a phone or a flashlight. Good for summer, it will maximize airflow and ventilation for your time spent in warmer weather. It features a compressible design, giving you enough extra room to take along your other gear. This sleeping bag has a compression bag, which will make storing your sleeping bag very easy. It features 2D Permashell, which is a porous, water-resistant, very insulated material that is treated with DWR and will keep you warm and dry in even the wettest of weather conditions.

    Pros
    • Compresses easily
    • Women's design has extra padding by your extremities
    • Features lightweight construction
    Cons
    • Down requires special cleaning care
    • Mummy shape is very fitted with no extra room to move
    • Camping sleeping bags are not suitable for backpacking
Runner Up
An image of Marmot Always Summer Down Sleeping Bag

With the Marmot Always Summer Down Mummy Sleeping Bag, you can experience a great night's sleep while on your weekend away. This sleeping bag has a mummy shape, which is wider on top and more tapered by the feet, keeping warm air close to your body. It uses Down Defender, protecting down from clumping when exposed to wet weather. Ideal for summer, it is extremely thin and airy since it does not require as much insulation as winter or 3 season versions. It is designed from nylon ripstop shell fabric and features a down lining, lasting for many years with the proper upkeep.

    Pros
    • Down lining can often last for many years
    • Nylon ripstop shell is breathable and comfortable
    • Suitable for warm summer weather
    Cons
    • Down loses insulation when wet
    • Mummy shape does not have extra space to move around
For Backpacking
An image of Sea to Summit Trek Tk II Down Sleeping Bag

If you're looking for a new sleeping bag, you might want to consider the Sea to Summit Trek Tk II Down Rectangular Sleeping Bag, which is rated very highly among customers. This sleeping bag has a rectangular shape, which is ideal for those who like room to stretch out. It features a nylon ripstop shell and a down lining, which is very strong, and when taken care of, can often last up to a decade. Ideal for summer, this 3 season Sea to Summit sleeping bag is built with a thin design that focuses on breathability and ventilation, which is intended for warmer weather. It is designed for backpacking and is lightweight, making it great for hiking or traveling long distances on foot. This sleeping bag has a compressible design, giving you enough extra room to take along your other gear.

    Pros
    • Designed to compress easily
    • Lightweight construction
    • Down lining has great warmth-to-weight proportion
    Cons
    • Down requires special cleaning care
    • Rectangular shape is not the warmest option
    • 3 season sleeping bags are not suitable for harsh winter weather
Additional Picks
An image of Marmot Never Winter Down Sleeping Bag

Before purchasing the Marmot Never Winter Down Mummy Sleeping Bag, it's important to know more. This sleeping bag has a nylon ripstop exterior and a down lining, which is made from authentic down and can withstand extreme temperatures. It has a mummy shape, sealing in your body heat since it is tight fitting. Suitable for summer, this 3 season Marmot sleeping bag is built with a light design that focuses on airflow and ventilation, which is intended for warm weather. With a lightweight build, it won't be a burden to carry. This sleeping bag features Down Defender, protecting down from losing loft when exposed to wet elements. It features an interior pocket, so you will have a place to conveniently store your small essentials, such as a phone or a watch.

    Pros
    • Lightweight build reduces the weight of your pack
    • Down lining can usually last up to a decade
    • Nylon ripstop exterior is breathable and comfortable
    Cons
    • Down is not hypoallergenic
    • Mummy shape doesn't have extra space to move around
    • 3 season sleeping bags are not suitable for harsh winter weather
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 sleeping bag has a barrel shape, which is tapered from top to bottom to increase heat efficiency and save weight. It features a nylon ripstop exterior and a down lining, which is made from waterfowl down and can withstand extreme weather conditions. With a lightweight build, it won't be a burden to carry. It is designed for summer for maximizing airflow to keep you comfortable during warm weather. It features a compressible design and is designed to be compact, so it can be rolled up small, fitting conveniently wherever you tale it. This sleeping bag is easy to carry, making it an excellent option if mobility and packing space are your main concern. It has a 40°F temperature rating, which is great for warm weather nights. It detaches via zippers, so you can transform it into two separate sleeping bags.

    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
Some Additional Information to Help You Decide on Your Down Summer Sleeping Bag:
Which Shape Is the Best Fit for Your Down Summer Sleeping Bag
Barrel Sleeping Bags

Trying to decide on the most fitting barrel sleeping bag for your next outdoor adventure? We will help you choose by giving you some important information that you might need to know about. These barrel sleeping bags have an incredibly spacious design, so they are ideal for people who feel too confined 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 are cut a bit closer than rectangular bags, so they are a great choice for something spacious while not compromising warmth. Feel ready to decide on the right down summer sleeping bag for you? You can get started here.

Rectangular Sleeping Bags

Trying to choose the most suitable rectangle sleeping bag for you? We'll help you make an informed decision by giving you some important facts. These rectangular sleeping bags have a super roomy design, so they are suitable for people who feel too claustrophobic by the tight mummy shape. They accommodate varying sleeping positions, so if you move around a lot at night, you'll have the space and freedom to sleep in any position you choose. With double zippers, they are perfect for a cozy night of sleeping for two as you can zip two sleeping bags together. However, they are quite heavy, so they are often bulkier and less comfortable to carry long distances. On top of that, these rectangular sleeping bags don't trap and heat the air around your body as well as other designs do, creating extra space inside which can weaken the bag's ability to keep you warm. Think you know which shape is a good fit for you? Then have a look at this fantastic product.

Mummy Sleeping Bags

Thinking about getting a mummy sleeping bag? We have only one mummy down summer sleeping bag. These sleeping bags weigh less than rectangular bags, providing excellent insulation per unit weight. However, they provide less space to move around, making them uncomfortable for sleepers who toss and turn. On the other hand, they are good for cold weather, so they are designed to hold in warmth and seal out drafts.