Chilly weather shouldn’t keep you from getting outside, but when you’re camping in the cold, you need a sleeping bag that will keep you from freezing. A 0-degree sleeping bag is an excellent choice for camping in a variety of seasons, but how do you choose the right one to warm you up?
We took vital performance factors into account to evaluate the best sleeping bags, like warmth-to-weight ratio, temperature rating, construction, and other features.
We’ve collectively spent years camping and using sleeping bags, and all of that knowledge went into testing. As long as the bag is still available for sale, it’s a contender for this list.
Here at Camping Tools, we’ve sorted through a variety of options to help you choose the best 0-degree sleeping bag to keep you cozy on your cold adventures.
Let’s get started.
Marmot Never Summer Sleeping Bag
The Marmot Never Summer 0 Sleeping Bag has a water repellent nylon shell surrounding water repellent 650-fill-power down insulation to keep you warm when the temperature drops, even if moisture accumulates in your tent.
The Never Summer is a mummy-shaped bag to keep the heat close to your body, yet it has a roomier anatomical foot box that doesn’t constrict your feet while still keeping your toes toasty.
A pocket in the footbox is explicitly designed to hold a hand or foot warmer packet if you need an extra boost of warmth.
The zipper is backed with a full-length draft tube to keep warm air in and cold air out, while a second zipper allows for ventilation when necessary.
- Two zipper system keeps cold air from getting in or provides extra ventilation.
- Pocket in footbox for holding a handwarmer to keep your toes warm
- The collar is down-filled to keep you extra cozy
- Soft and comfortable – like sleeping on a cloud.
- Easy to use a zipper.
- Great loft.
- The foot box is wide and comfy for your feet.
- The water-resistant down provides added protection from the elements.
- Can save hundreds of dollars by going with this bag instead of with a higher-end competitor’s.
- There is no draft collar which is a bummer for a zero-degree bag.
- It doesn’t compress as well as other bags that have higher rates down.
Marmot Ouray Sleeping Bag
The Marmot Women’s Ouray 0 Degree Sleeping Bag has been on the market for several years already, but in 2018 they modified it and a bit improved it. In fact, as of writing this text, both versions are still available on the market.
Women often run colder than men, and bags that are too roomy to fit properly only exacerbate that problem.
The Marmot Ouray 0 Degree Sleeping Bag is designed to better fit the anatomy of a woman’s body, with extra room at the hip area and narrower shoulders. Plus, the Ouray has extra insulation in areas that are more prone to losing heat.
Combining the insulated Hood with a down-filled collar helps keep your head cozy, while a wraparound footbox keeps your feet extremely warm while still giving them room to move.
If you happen to get too hot, a second zipper allows you to fold down the top layer of the bag for additional ventilation.
- Anatomically designed to fit a woman’s body better
- Additional insulation in areas prone to heat loss
- Wraparound footbox keeps toes extra warm
- Comfortable for a mummy bag.
- Quality materials.
- Great temperature rating.
- Great hood design.
- No compression straps on the stuff sack.
Big Agnes Blackburn UL 0 Sleeping Bag
Take care of both problems with the Big Agnes Blackburn UL 0 Degree Down Sleeping Bag. Whether you’re backpacking through high-altitude ranges in summer or going on a ski touring hut trip, the Blackburn UL is the ideal way to stay warm without tacking on too much extra bulk.
Down insulation keeps you comfortable through below-freezing temperatures while making the bag lightweight and highly compressible.
This down is treated with DownTek to protect it from loft-compromising moisture. To be safe, the soft and smooth ripstop fabric is treated with a DWR coating as well to repel any wayward drips and drops.
A full-length pad sleeve keeps your sleeping pad from shifting throughout the night, and an integrated pillow pocket keeps your camp pillow in place. You can even stuff it with extra layers when you want to go minimalist.
Designed from nylon ripstop shell material, it is durable, so it will not wear out after being exposed to rough terrain.
It has a high tear strength, which ensures abrasion resistance. This sleeping bag has Downtek, which repels water.
It has a free-range hood and a built-in pillowcase, so it has a special pocket to hold a pillow, supporting your head and neck while you sleep.
- Mate together left and suitable zip bags
- No-draft collar, no-draft wedge, no-draft zipper
- Interior fabric loops for sleeping bag liners
- Exterior loops for hang drying or storage
- Mesh storage sack & stuff sack
- Nylon ripstop shell fabric with a water repellent finish
- Nylon taffeta lining
- Features a built-in pillowcase
- High-tear strength will last for years
- Free-range Hood provides added cushion by the head
- The rectangular shape is not very insulated
Nemo Sonic 800-Fill Down Sleeping Bag
NEMO Sonic -20 Degree Sleeping Bag is an award-winning winter sleeping bag that has been further improved recently. Equipped with a venting system that allows some heat to escape without letting cold air in, you can use this bag in an extensive range of temperatures.
The Nemo Sonic sleeping bag can keep you warm on nights that fall to 15 degrees Fahrenheit or 11 degrees Celsius.
It is made with the severe winter camper in mind, with quality materials that are sure to last you a very long time.
The Thermo gills will regulate your warmth, and the Toaster Box will reduce cold spots. The sleeping bag has a center zipper that allows you easy access when getting out of it.
Nemo Sonic Down comes complete with all the components you would need for your outdoor adventures. It doesn’t require any additional purchases to use it.
It’s a ready-to-use sleeping bag with a feature-rich shell to let you sleep even on rougher surfaces.
The stuff sack is included in which you can store the product to reach your destination. If you want to enhance its warmth in snowy areas, you can consider purchasing the sleeping pad or mad separately.
This sleeping bag sleeps only one, so it will be light in weight. The regular version of this bag weighs 2 pounds, 6 ounces, and the extended version weighs 2 pounds, 9 ounces.
As you can tell, they are not very heavy and should fit well with the rest of your gear, as extra weight tires you out faster when you are out hiking or mountaineering.
Some people use it for camping only, so once they set up their tent, they leave their sleeping bags inside and enjoy the outdoors without all the gear attached.
- Thermo gills.
- Top-quality down fill.
- Stretch stitching at the knees.
- It has a waterproof and breathable footbox and Hood.
- Dual draft tube.
- Zippered pocket.
- They are designed for shallow temperatures.
- Two sizes.
- Great packed size.
- Great temperature rating.
- Quality craftsmanship.
- Great warranty.
- Compression stuff sack included.
High Peak Outdoors Glacier 0-Degree Sleeping Bag
Although not completely waterproof, the materials use water repellent technology.
Whether you’re hunting or hiking, this High Peak sleeping bag will protect you against the elements while your body prepares for the day ahead.
The bag itself is made from a Nylon Taffeta shell and uses Invista Tactel fibers for insulation. These synthetic materials will undoubtedly keep you nice and cozy at a toasty temperature.
If you get lonely in your sleep, you may want to connect your sleeping bag to your friends or partners. Simply zip the two bags together.
The overall size is 86 inches long, 34 inches wide at the top, and 33 at the bottom section where your feet go.
- Hollow fiber insulation for temperature control
- Two-way zipper
- Full Hood for warmth
- 90 inches long x 39 inches wide
- Thermal collar/hood design for warmth
- You can zip two bags together
- 4-Season sleeping bag
- The compression stuff sack is included
- It weighs up to 8 pounds
0 Degree Winter Sleeping Bags
This 0-degree winter sleeping bag is made of 100 percent polyester and is lightweight and highly portable. This bag features top-of-the-line polyester fiber, which is aligned with a high-quality shell to provide extra warm comfort during outdoor activities without adding any extra weight to your backpacking.
This is an easy-to-fold sleeping bag with its compression sack with straps that make it convenient to carry, store and reuse. This sleeping bag is ideal for cold temperatures for up to 32 degrees and even great for warmer weather.
This sleeping bag has a wind buffer that prevents heat loss and contains a detailed anti-pinch grosgrain ribbon to prevent the zipper from snagging or pulling.
This is a skin-friendly sleeping bag with a pongee lining for a soft, silky smooth feel that will feel amazing once you’re entirely immersed within this sleeping bag.
This sleeping bag features a nylon shell, so it is highly durable and even waterproof. This sleeping bag will keep you warm even in extreme weather and prevent you from ever getting damp.
This sleeping bag also comes with a 30-day warranty, so if you do not love your new sleeping bag for whatever reason, simply return it for a full refund.
- Top-quality 210T Nylon ripstop on the shell
- The first-rate 190T Pongee lining is skin-friendly
- It is not only good for warm weather but also suitable for extremely cold weather.
- Made of polyester
- Lightweight and easily portable
- Silky lining
- It may be too thin for some
Paria Outdoors Thermodown 0 Degree Down Sleeping Bag
The bag is made from 20D ripstop nylon fabrics, making the bag durable and able to withstand season after season of use.
The bag also has high-end features while keeping the price very low, thereby offering fantastic value for money. We think it’s the best 0 degrees down sleeping bag for the price.
- Very warm
- Lightweight and compact
- Price, depending on budget
- Not suitable for extreme cold
Kelty Cosmic 0 Degree Down Sleeping Bag
This sleeping bag model is one of the best-sellers in Amazon’s sleeping bag category and is often a top choice in ‘Best of’ overviews.
That is why we wanted to dive in deeper and discover more about this popular sleeping bag.
This sleeping bag is light on weight, but not when it comes to durability and warmth. At only 3 lbs, you can 9 oz for the regular size and 3 lbs 13 oz for the longer one; you can roll the Cosmic 0 Degree bag compactly for use on any length of the camping trip.
The Cosmic 0 Degree has a well-constructed bag with a taffeta shell and liner and is filled with Kelty’s proprietary stuffing, called “550 fill power DriDown”.
We were excited to see that the bag is offered in two sizes: a standard 6′ length and a more extended 6’6″ size for those of us who want (or need) a bit more room, but this bag only comes in one color, which is called “Autumn.” It’s a gender-neutral burnt orange color that will transition well throughout the seasons.
The taffeta lining is smooth and comfortable, and the DriDown blend remains warm even as the temperatures dip into the 20s.
The combination of the two ensured that we stayed in that perfect zone of sleeping comfort while testing this bag.
While personal comfort varies widely, most consumers will find that this bag is quite comfortable in lower temperatures without sleep in additional comfort layers.
Although the bag is advertised for colder camping conditions, we found that the sleeping bag will easily transition between 80 degree nights and 45 degree nights, making it the ideal companion for an extended camping trip through varied climates.
- Fantastic value-for-money
- Superb weight-ratio
- 550-fill power hydrophobic DriDown
- Durable 20D Nylon taffeta shell
- Satin-like 50D polyester taffeta liner
- Quilt-through construction
- Thermal comfort cinched Hood
- Comfy, spacious foot box
- Dual-sliding zipper with anti-snag design
- Draft collar
- Full-length draft tube
- Stuff sack included
- Temperature rating not adequate for 4-season usage
Buyers Guide for Best Womens 0 Degree Sleeping Bag
A down-insulated sleeping bag is excellent for keeping you warm while weighing less.
It compresses well, making it portable and easy to carry around with you on your adventure.
The most common types are ducked down and goose down, and both are as good as each other when it comes to insulation.
The loft of down creates lots of tiny air pockets, meaning that the warm air will be trapped and retained.
Down-insulated sleeping bags are best for cold and dry environments, as any moisture can make the feathers lose their insulating properties.
Synthetic bags can be cheaper but tend to be heavier and have a larger pack-up size.
2. Shape and Size
Square sleeping bags are just standard, essential sleeping bags. There’s wiggle room, and it can come in double size.
They don’t do much to protect you from the cold, so bear this in mind when choosing the best winter sleeping bag for you.
Mummy sleeping bags are shaped how you’d picture a mummy being mummified.
Wider at the top and tapered at the bottom, this design of a sleeping bag will keep warm air inside the bag and close to your body, without circulating the bag and cooling down.
They’re perfect for use in sub-zero temperatures and are usually super comfortable.
- Inner Pockets
A lot of sleeping bags have pockets in the interior. This is great for storing valuables such as phones, watches, or wallets.
- Draft Collar
A draft collar is just a tube of insulation that drapes over your chest and neck, sealing in the warmth of the bag. This is a cold-weather essential when choosing the best winter sleeping bag for you.
Insulating the collar of the sleeping bag will ensure that your body heat doesn’t escape via the top of the sleeping bag. Most draft collars will have an adjustable pull cord to tighten when needed.
A lot of your body heat is lost through your head, so when sleeping in colder climates, you’re best off keeping your face and head nice and toasty.
A shaped hood will help keep in the heat, and those with a drawcord closure allow you to tighten the Hood to trap in the warmth.
- Water Resistance
In sleeping bags, sweat can get trapped in the down or outside the tent, which reduces the sleeping bag’s ability to insulate heat.
When trying to sleep in a sleeping bag in the winter, the last thing you need when trying to sleep in the winter is for the inside of your bag to be frozen. This is why it’s best to choose a waterproof sleeping bag made with water-resistant fabric.
You may opt for a partial length zipper. This is great for saving weight but can limit the ventilation inside the bag.
A snag-free zipper prevents the side zipper’s teeth from tearing the fabric. If the fabric gets torn, it will spill all the insulation. The zipper is usually bordered by a stiffer fabric, which won’t tear easily. The best winter sleeping bag will have a snag-free zipper.
Frequently Asked Questions
1. Is it safe to camp in below-zero temperatures?
It certainly isn’t that comfortable to sleep in temperatures of 0°F and below, but it’s safe if you have the right gear.
Of course, you need your sleeping bag, but you also need an appropriate four-season tent and the correct clothes to stand up to such low temperatures.
Sleeping outdoors in these temperatures isn’t for the casual camper but mountain climbers and other adventurous folks. That said, some people sleep outdoors in cold weather out of necessity.
For homeless people in cold climates, a below-zero sleeping bag can mean the difference between life and death. You might want to donate a below-zero sleeping bag to a charity or organization that helps homeless individuals in your local area.
2. How will I know which temperature rating is suitable for me?
Temperatures fluctuate even when you compare the temperature on the same day from one year to the next, so it’s impossible to know exactly how cold it will be where you’re camping.
Therefore, you should choose a sleeping bag with a temperature rating that’s suitable for the lowest possible temperature at the time you’ll be camping, even if it doesn’t usually get quite that cold. That way, you won’t get caught out if it’s colder than average.
Picking out a new backpacking sleeping bag for any outdoor adventure can be super overwhelming. There are so many choices and so many features to consider, not to mention the price tag.
So, we’ve put together this simple guide on how to choose a backpacking sleeping bag for your next great adventure. Hopefully, this makes your gear buying process more manageable. Happy shopping!