Colin Snow
Double sleeping bags are a great option for camping couples who want to snuggle up on a cold night. They are also ideal for those who feel restricted by narrower bags. While there is no standard width for double sleeping bags, they are generally wider than single sleeping bags to accommodate two people. Some factors to consider when choosing a double sleeping bag include length, shoulder and hip girth, temperature rating, and weight. It's also important to ensure that the bag is comfortable and has the desired features, such as double zippers and adjustable ventilation.
| Characteristics | Values |
|---|---|
| Temperature Rating | 20-40 degrees Fahrenheit |
| Length | Regular (up to 6 feet) and long (up to 6 feet 6 inches) for men. Regular (up to 5 feet 4 inches) and long (up to 5 feet 10 inches) for women. |
| Shoulder Girth | 58-66 inches for men and 56-60 inches for women |
| Hip Girth | 58 inches for men and up to 60 inches for women |
| Weight | 15 lbs |
| Zipper | No-snag two-way zipper |
| Width | Queen size sleeping bags offer generous width, while plus-size bags provide extra width |
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What You'll Learn
Temperature ratings
The warmth of a sleeping bag is often advertised as its temperature rating. This is a metric that is supposed to indicate the lowest temperature at which the bag will keep you warm enough to sleep. However, in reality, there are many other factors at play that determine how warm you will feel in a sleeping bag.
Firstly, it is important to understand how sleeping bags are tested for warmth. Most brands send their sleeping bags to an independent test lab that assigns bag temperature ratings. EN (European Norm) was the original standard adopted by the sleeping bag industry, and now the ISO (International Standards Organization) oversees bag testing, using a very similar method. Lab testing simulates how a sleeping bag should be used: a sleeping pad is placed under the bag, and a test dummy inside the bag is dressed in base layers. While this protocol ensures that all bag tests are done the same way, it can't account for variations in people's body types, clothing, gear, and sleeping conditions.
It is also important to note that temperature ratings are estimates and not exact measurements. Many companies choose their own temperature ratings, so there can be limited comparison between companies. Most backpacking bags are rated according to an industry-standard EN test, which provides a more consistent measure of warmth. However, numerous other factors can affect your actual warmth beyond ambient air temperature, including the type of shelter you're in, the sleeping surface beneath you, the type and quality of your sleeping pad, and even your metabolism.
When choosing a sleeping bag, it is essential to consider the coldest conditions you anticipate experiencing and select a bag that will keep you warm at or below that temperature. Good-quality double bags usually have separate zippers or foot vents on each side, allowing couples to adjust their temperatures individually. For example, the Kelty TruComfort Doublewide 20 is a spacious, two-person car-camping bag that allows occupants to adjust their temperature and position without disturbing their partner. Similarly, the TruComfort and the Nemo Jazz Double feature zippers on both sides and foot-venting zippers for each occupant. On warm nights, the top quilt can be removed, and sleepers can sleep under the interior quilts.
Some sleeping bags are designed for warmer seasons, with temperature ratings between 20-40 degrees Fahrenheit. For example, TETON's three-season bags are rated at +20°F, and the Sierra Designs Get Down 20 is rated to 23°F. On the other hand, the OutdoorZ Redwood has a much lower temperature rating of -10° F, making it suitable for colder climates. It is important to note that the temperature ratings of sleeping bags can vary significantly, and it is essential to consider your specific needs and preferences when making a purchase decision.
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Zippers
When it comes to double sleeping bags, zippers are an essential component. Not only do they provide easy access in and out of the bag, but they also offer ventilation options and the ability to connect multiple bags together. Let's take a closer look at the role of zippers in double sleeping bags and what features to consider when choosing one:
Types of Zippers
Double sleeping bags typically feature two-way zippers, allowing users to adjust the bag according to their comfort and temperature preferences. These zippers can be opened from either the inside or outside, providing versatility and convenience.
Some double sleeping bags, like the TETON Sports Mammoth Sleeping Bag, offer a no-snag two-way zipper design. This feature ensures a smooth and uninterrupted zipper motion, preventing the zipper from getting stuck and causing disturbances during sleep.
Zipper Length and Durability
Sleeping bag zippers vary in length, and replacement zippers are often around 9 feet long. However, it's important to measure the zipper you need before ordering, as they can differ between models. Adult sleeping bags, for example, typically use heavier-duty zippers made of materials such as moulded plastic or metal. These zippers are designed to withstand the rigours of camping and outdoor use.
Ventilation and Customisation
Connecting Multiple Bags
In some cases, double sleeping bags can be joined together to accommodate larger groups or families. The TETON Sports Mammoth Sleeping Bag, for instance, can be connected to another bag using its zippers, creating a larger sleeping space. This feature is particularly useful for camping trips with multiple people.
Additional Features
When considering the zippers of a double sleeping bag, it's also worth looking for features like draft tubes. Draft tubes run along the zipper line and help prevent heat loss, ensuring that the bag retains warmth more effectively. Other features like stash pockets or integrated pillows might also be included, enhancing the overall comfort and functionality of the sleeping bag.
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Weight
The weight of a double sleeping bag is an important consideration, especially if you plan to carry it deep into the backcountry. Warmer bags tend to be bulkier and heavier than colder bags, so it's important to consider the weight in conjunction with the packed size and the temperature rating. If you're looking for a lightweight option, the REI Co-op Magma 30 Sleeping Bag weighs only 20 ounces, although it's been described as constrictive due to its narrow cut.
For a warmer option, the TETON Sports Mammoth Sleeping Bag is rated for temperatures between 20-40 degrees Fahrenheit, and it weighs around 15 lbs, making it better suited for car camping. The Kelty TruComfort Doublewide 20 is another spacious option that can accommodate two sleepers up to 6.5 feet tall. It's been described as one of the roomiest bags tested, but no specific weight is provided.
If you're looking for a balance between weight and comfort, the Redwood sleeping bag might be a good option. It's made with heavier materials that provide a cozy, weighted feeling, but it's not recommended for backpacking or human-powered excursions. The Polara sleeping bag is also described as versatile, but it may not be suitable for taller individuals.
When considering the weight of a double sleeping bag, it's important to keep in mind the trade-off between weight and warmth. Lighter bags may be more convenient for transport, but they may not provide the same level of warmth as heavier options. Additionally, the type of materials used can impact the weight, with more expensive insulation like goose down being lighter. Ultimately, the decision should be based on your specific needs and priorities for your camping trip.
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Length
When it comes to double sleeping bags, length is an important consideration. The length of a sleeping bag impacts its warmth and comfort. The basic principle is that the bag should be snug enough to minimise air space, which needs to be heated and kept warm, but not so tight that it becomes uncomfortable.
Firstly, consider the height of the individuals who will be using the double sleeping bag. Men's sleeping bags typically come in two standard lengths: regular, which fits individuals up to 6 feet tall, and long, which accommodates those up to 6 feet 6 inches in height. A short version is sometimes available, suitable for people up to 5 feet 6 inches tall. Women's sleeping bags also offer regular and long options, usually accommodating heights of up to 5 feet 4 inches and 5 feet 10 inches, respectively, though these measurements can vary slightly between brands and styles.
When selecting a double sleeping bag, it is generally recommended to choose the shortest length that comfortably fits both individuals to maximise warmth and minimise weight. This means opting for a bag that allows both sleepers' feet to reach the end of the bag, gently compressing the insulation, without feeling cramped or restricted.
In addition to the standard length options, some sleeping bags offer adjustable features. For example, the TETON Sports Mammoth Sleeping Bag includes zippers on both sides and the bottom, allowing for added ventilation if you get too warm. This customisability can be beneficial for couples with different temperature preferences or for camping in varying weather conditions.
Finally, it's worth noting that sleeping bags come in various sizes, including queen, king, and plus sizes, which offer more generous dimensions for couples who desire extra space or individuals who prefer a roomier sleeping environment. These larger sizes provide a balance between cosiness and freedom of movement, ensuring a good night's sleep in various outdoor conditions.
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Hip girth
The hip girth of a sleeping bag varies primarily based on whether it is a men's or women's sleeping bag. Most men's sleeping bags have a hip girth of around 58 inches, while women's bags are often slightly wider, with a hip girth of up to 60 inches, to accommodate the typically wider hips of women. It is important to note that these measurements can vary depending on the brand and style of the sleeping bag. For example, the Mountain Hardwear Bishop Pass 15 sleeping bag has a hip circumference of 72 inches for women's sizing.
When choosing a sleeping bag, it is recommended to opt for the shortest length that fits your body to minimize extra space and maximize warmth. Additionally, if you tend to move around a lot in your sleep or prefer extra space, you may want to choose a larger size. If you plan to share the sleeping bag with a partner, consider queen or king-size options for more space and comfort.
Some sleeping bags, such as the TETON Mammoth series, are designed to be as wide as a queen-sized mattress, providing ample space for two people. These larger bags are typically heavier and best suited for car camping rather than backpacking. The TETON Mammoth bags also feature a brushed flannel finish and a no-snag two-way zipper, making them a comfortable and convenient choice for couples.
The Big Agnes Echo Park 20 is another example of a spacious sleeping bag with a hip girth of 74 inches, making it a good option for those who require more room. This bag also features double zippers, allowing for easy entry from either side.
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Frequently asked questions
Double sleeping bags come in a variety of widths, with some queen-sized bags offering more space for those who feel restricted by narrower bags. Plus-sized sleeping bags are also available for those who require extra width and length.
Consider the length and build of the people using the bag, as well as individual sleeping preferences, such as temperature ratings and the need for extra space.
TETON offers four options at two different temperature ratings. Their Sports Mammoth +20°F bag features a no-snag two-way zipper and can be joined with another bag for additional space. KingCamp also offers an extra-wide flannel sleeping bag with a water-resistant polyester outer shell.
Wider sleeping bags provide more space and comfort, especially for restless sleepers. They also accommodate different body types and reduce the sense of claustrophobia that tighter bags may cause.
Consider the height and build of the users, as well as sleeping preferences. If you plan to share the bag, queen or king sizes may offer more comfort. Plus-sized bags are also an option for those who require extra width and insulation.
