If you looking for a sleeping bag for the backcountry, , please see our Backpacking Bag Buying Advice Article .
A Camping or Backcountry Bag
There are really just two main categories of sleeping bags. Those you're willing to carry around in a pack on your back for days, and those that you're not.
Backcountry Sleeping Bags
The backcountry is usually accessible by foot or things like canoes, kayaks, mountain bikes, horses, etc. More than not, if you're in the backcountry, it took you a lot of self-powered time and effort to get there, like a 5-day backpacking trip in the Tetons of Wyoming. You are nowhere near a road or developed area — and you do this for fun.
Being the backcountry for days or weeks at a time has its limitations. The most significant of all are space and weight. Backpacking for several days requires lightweight, slim-fitting, down-insulated, mummy-shaped sleeping bags. The mummy-shaped design minimizes weight and, more importantly, creates a tighter shell around its user, creating more warmth because there is less air to warm. Down is the best insulator and is incredibly lightweight. Backcountry bags are expensive, starting around $300 and getting close to $1,000 in some cases.
Sleeping Bags for Camping
The front-country is where you'll see these types of sleeping bags. You usually drive right up to the front-country, where you may find ranger stations, campgrounds, water spigots, RVs, improved roadways, and if your lucky, flushing toilets.
The nice thing about the front-country is there is less demand for reduced space and weight. Sleeping bags for these areas are often rectangular, roomy, comfortable and insulated with relatively inexpensive synthetic fibers, making them much heavier. The nice trade off is a much lower price. There are many 0-degree camping bags that are less than $100. Just take a look at our Favorite Bag the Wenzel Grande.
Which is Right for You?
In the end, it doesn't matter what you sleep in, as long as it's warm and comfortable. You can easily use a backcountry bag for campground camping. So if you've got one, use it. We just don't recommend buying one for the sole purpose of car-camping. Conversely, a traditional camping bag is not very useful in the backcountry. They are simply too bulky and heavy. There are a few crossover sleeping bags that can be used for both basic backpacking and car camping. These types of bags will be addressed a little later in the article.
Some car-camping bags come in a mummy style and look a lot like backcountry bags. Generally, the quickest way to tell the difference is the look at the price tag and insulation. If it's within $100 and doesn't have down insulation, you've hooked yourself a car-camping bag.
Camping Bag Basics
The rest of the article will focus solely on sleeping bags for the front-country, and what to consider before making your purchase. Some of the more important things to consider in a good sleeping bag are its shape, size, warmth rating and type of insulation.
The image above shows a few of the different shapes of sleeping bags available. There are also a few crossover sleeping bags that can be used for both basic backpacking and car camping. However, for the sake of this article (and your sanity), we focus on two of the most basic shapes: rectangular bags and mummy bags.
This is the most common shape for traditional sleeping bags. Rectangle designs allow maximum space to move around, resulting in maximum comfort. This is a time-tested design and is preferred by most car-camping enthusiasts. Traditional rectangle bags have rugged cotton exterior shells and cozy flannel linings. Weight and packed size are not as much of a concern when car camping, which allows many rectangular bags to be over-sized, thick and plush. If zippers and sizes are compatible, two rectangle bags can be zipped together to create one large bag for two.
Additionally, there are many rectangular bags that are constructed entirely with man-made fibers like polyester. These fabrics allow the bags to be lighter weight and more compact when stored. Synthetic fabrics also are more water-resistant, silky and cooler.
Below are some pros and cons of traditional, rectangular sleeping bags:
- The roomiest of all sleeping bags
- Very comfortable
- Often rugged, built to last
- Can be unzipped and placed flat (picnic blanket)
- Can be zipped together as one large bag
- Often heavier and larger packed size
- Cotton designs are bulky and not water resistant
- Larger packed size
- Larger interior space creates more cold spots
Aptly named, these bags are more form fitting. They generally have a hood designed to cover the head and are much narrower through the shoulder, midsection and foot box. There's a reason for the more constrictive design. Their shape allows the bag to more efficiently hold in body heat, giving them a higher warmth to weight ratio. In general, a mummy bag with a 20-degree rating can often be much lighter than a rectangle bag with the same score. The difference is the mummy bag uses less fabric to accomplish the same result. However, the tradeoff is less comfort and space. For this reason, many campground campers often select traditional rectangle bags. Below are the positives and negatives of mummy bags.
- Warmer with less weight
- Smaller packed size
- Efficient at retaining body heat
- More versatile (camping and backpacking)
- More constrictive/ far less comfortable
- Not often suitable for creating a double bag
In addition to mummy bags, there are a few semi-rectangular (or crossover/hybrid) bags on the market. These bags have more of a barrel shape and are designed to be a more general-purpose bag. They are primarily for car camping, but can also double as a backpacking bag for shorter trips. Typically, they have a greater warmth to weight efficiency than rectangular bags but are roomier than traditional mummy bags.
Directional Bags — Right-hand zipped bags allow the bag to open and close on your right if you are lying in the bag on your back. The opposite is true for left-hand zipped bags.
Size: Is More Room Always Better?
Warmth is a very individual measurement. Every person has their tolerance for cold when the sun goes down, and the mountain air falls into the valleys. However, one general rule of thumb with sleeping bags is bigger isn't always better. A sleeping bag does not create warmth. It's only as warm as its ability to hold in body heat.
Larger bags, especially over-sized rectangular bags, are comfortable because of the extra room they provide, but that increased volume leaves more area for body heat to warm. Think of your body like a wood-burning stove. The smaller the room where the stove sits in, the warmer the air will stay. However, trying to heat every room in the house with one central stove has its limits.
Larger bags have more interior air to be heated, and a smaller body just can't heat it all, leaving cold spots or an overall colder interior temperature. In warmer sleeping conditions, this doesn't create much of a problem, but that changes if nighttime temps are lower than 40 degrees.
All told you should consider your natural metabolism (do you normally sleep warm or cold), the size of your body, and the type of weather and climate where you usually camp. Additionally, it's important to consider the shelter you prefer. Tent camping and 5th-wheel camping have different warmth considerations.
Generally speaking, if you are 6 feet tall or less, a regular size bag is sufficient for your size. Most regular length bags fit up to 6 feet 6 inches. If you are 6 feet or under, a regular bag gives you extra fabric at the opening to pull around your shoulders on a colder night. Additionally, there are many bags on the market that are specifically designed for a women's metabolism and body size.
Should I Consider a Double Bag?
Many rectangle bags can zip together to form one large bag. In terms of sheer warmth, this creates an ideal environment to share body heat. Sharing a double bag also has its drawbacks. The greatest of all being the inability to individualize warmth. In many cases, one sleeper is very comfortable, while the other is too warm.
Newer designs like the Kelty Tru.Comfort (above) offer one large, queen-sized bag with several layering options for individual warmth. Our tests revealed that these layers work well enough for a decent night's sleep. Additionally, more traditional rectangle bags like the TETON Sports Polara (below) can be zipped together, and come with several individual layering options as well.
In the end, using a double bag is strictly a personal preference. Some sleepers don't mind sharing the space, while others need a little alone time for better sleep. If you are interested in this type of sleeping system but are unsure, we recommend going with two single bags that come with layering options, like the Polara 3-in-1.
What do the temperature ratings mean? If you've ever wondered, you're not alone. Does a rating of 0-degrees always equal a comfortable night's sleep when temps are 0 degrees? Generally speaking, no. Temperature ratings mean that the average person will not be comfortable at temperatures any lower than this rating. It also assumes the sleeper is wearing long underwear and is using a sleeping pad. For those reasons, we're almost always chilly well before the temperatures drop all the way down to the rating.
The 20-Degree Rule
In addition to what you are wearing, metabolism plays a large factor in warmth and can vary greatly from person to person. So when selecting a camping sleeping bag, conventional wisdom recommends purchasing a product with a temperature rating about 20 degrees colder than the expected minimum overnight temperatures you plan to experience. For example, if you plan to mostly sleep in the 50s at night, pick a bag with a 30-degree rating — or wear your long underwear.
You can stay warmer in any bag by wearing a warm wool hat or beanie, long underwear or base layers, socks and a thin down coat or fleece pullover. Generally, these items are comfortable enough to sleep in and can provide a layering system that can be added to or removed from during the night.
Other Warmth Ratings
Some technical sleeping bags (unlike the ones in this review) will have a set of temperature ratings based on the European Norm 13537 standardized test of sleeping bag warmth. Many manufacturers invest in having their bags' warmth tested by an approved lab in Europe, but not all. Real world testing gives us the most accurate idea of each bags' comfortable range of temperatures.
If you need a seriously warm bag (and have a seriously generous budget), consider checking out our review of the best winter bags.
Types Of Insulation
There are two types of insulation used in traditional sleeping bags for camping: Synthetic insulation and down insulation. Whether rectangle, barrel or mummy-shaped, nearly all camping bags use some version of synthetic insulation. This is because it is cheaper and more plentiful, making the bags less expensive for a broader range of buyers. Many mummy bags use down, making them more appropriate for backpacking.
You can increase your bag's insulative abilities with an insulating liner. Usually made from polyester, cotton or silk, these liners are a thin sack you use to line your bag. They help keep body heat where it should be — right next to you.
Camping bags keep you warm by layering batts (or blankets) of polyester fibers to hold in the warmth your body creates. The thickness of the insulation is referred to as the loft. Regardless of the type of insulation, the greater the loft, or thickness, the warmer it will be. In other words, the more insulation you stack up inside the bags inner lining and outer shell, the warmer and heavier it will be. Here are the pros and cons of synthetic insulation:
- Easier to launder
- Dries much faster
- Durable (think teenagers or young kids)
- Insulates better than down when wet
- Less effective insulator than down
- Bulkier/less compressible when packed
It's rare for a regular camping bag to use goose down for its insulation; however, there are a few bags that do. Down insulation is still unsurpassed for its ability to trap heat. Most synthetic insulation fibers are manufacturer's attempts to mimic down's incredible abilities to create warmth. Basically, everything synthetic insulation is, down is not, and vice versa. This creates many pros and cons:
- Unmatched ability to insulate
- Very lightweight
- More comfortable feel
- Very compressible (packs very small)
- Does not insulate when wet
- Comes from animals
- Allergenic to some people
There are also treated down options, designed to resist moisture. This, however, is the most expensive type of down and is rare in common sleeping bags.
Weight & Packed Size
Synthetic insulation is both bulky and heavy relative to down, that's partially why products built for car camping are large when packed for transport. Some of the models we tested weigh more than 10 lbs, but who cares? When car camping, you rarely carry your kit more than a couple hundred feet, and being cozy and comfortable is worth the extra weight and bulkiness. A few of the camping bags in our review are just small and light enough to carry on brief backpacking trips. Synthetic insulation can be a good choice for a backpacking bag if you're almost certainly gonna get wet, but will always be heavier and less compressible than a similarly warm down-insulated product.
At home, don't store your bag its stuff stack for long periods. Over time this permanently compresses the insulation by breaking down small fibers (down or synthetic). Instead, hang your bag or store it in a loose cotton bag. For a more economical option, store your bag in a large trash bag.
Features and Additional Considerations
Here are some additional considerations that will help you choose a bag that will keep you a happy camper.
Ease of Cleaning
We'd love to say that you can just throw all of these bags into the wash at home. That's not often the case. Many of these require the larger, front-loading washers at laundrymats or require laborious hand washing. Something to consider.
Interior Storage Pocket
Need easy access to your headlamp, chapstick (careful in bear country), or cell phone at all hours? You'll want to look for integrated storage pockets.
One downside of a rectangular bag is that a lot of heat can escape from the opening. Bags with shoulder baffles reduce this effect by narrowing the opening. Those with drawstrings to pull the baffle tight are even better. The REI Siesta and TETON Polara and Celsius have excellent baffles.
Zipper Baffle or Draft Tube
Look for a bag with a substantial baffle running the full length of the zipper to keep drafts outside where they belong. The Siesta and Polara both have effective zipper baffles.
A full-length zipper lets you open your sleeping bag up entirely to use as a comforter or lounge blanket. We're all for enhanced versatility. The Wenzel Grande is a great picnic option. Other zipper considerations include:
- Velcro Zipper Closure - It's easy to toss and turn your way to an unzipped zipper, and an unpleasant draft. A little velcro tab goes a long way to combat that situation.
- Two Way Zipper — A bag that opens at either end gives you more options to optimize your comfort level.
- Zipper Quality — A broken zipper is a common way to end an item's lifespan. Make sure yours unzips and zips easily.
A Few Last Things to consider
- Does the bag easily fit into its stuff sack? Nothing is more crazy-making than wrestling with a sleeping bag for half an hour.
- What kind of warranty does the bag have? Many companies offer a warranty against manufacturer defects that lasts the reasonable lifetime of the product. That can come in handy.
- Where is the bag made? We like to support companies that support their workers and the environment.
There are many sleeping bags to choose from, and even more bells and whistles offered by each brand. However, of the all the factors to consider, two are the most important: Will the bag you want to keep you warm, and is the bag you want going to be comfortable? By at least getting these two things correct, you are well on your way to good night's rest in the outdoors.