Colin Snow
REI Co-op offers a wide range of sleeping bags for various outdoor activities, including camping and backpacking. Sleeping bags differ based on their shape, temperature rating, insulation type, and additional features. The three basic shapes are rectangular, semi-rectangular or modified mummy, and mummy. Sleeping bags with lower temperature ratings tend to have snug-fitting hoods. Sleeping bags with higher ratings are designed to provide ample room to stretch out and roll over, making them ideal for camping. REI's sleeping bags cater to different budgets, with options under $100 and higher-end models costing over $1000.
| Characteristics | Values |
|---|---|
| Sleeping bag types | Camping, backpacking, quilts |
| Sleeping bag shapes | Rectangular, semi-rectangular/modified mummy/barrel, mummy, double, kids |
| Sleeping bag features | Adjustment features, stash pockets, pad compatibility, draft-blocking details, snug-fitting hood, extra zippers |
| Sleeping bag insulation | Down, synthetic |
| Sleeping bag temperature ratings | "Comfort" rating for "cold sleeper", "limit" rating for "warm sleeper", ISO/EN testing |
| Sleeping bag weight | Lighter for backpacking, heavier for camping |
| Sleeping bag size | Regular, long, short |
| Sleeping bag price | Starting under $100, higher-end models over $1000 |
| Sleeping bag sales | Up to 60% off during the REI Anniversary Sale |
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What You'll Learn
Sleeping bag shapes: rectangular, semi-rectangular, and mummy
Sleeping bags come in three basic shapes: rectangular, semi-rectangular (or "modified mummy"), and mummy. Each shape offers distinct advantages and is suited to different camping needs.
Rectangular sleeping bags are a popular choice for camping as they offer ample room for legs and arms to stretch out. Some rectangular bags can be fully unzipped and used like a comforter. This shape is ideal for those who prioritize comfort and space over weight and packability. Rectangular bags are also suitable for car camping, where bulk and weight are less of a concern.
Semi-rectangular sleeping bags, also known as "modified mummy" or "barrel" shapes, offer a compromise between warmth and roominess. This designation covers a variety of shapes, providing a good balance for those who want a blend of the features of rectangular and mummy bags.
Mummy-shaped sleeping bags are designed to boost warmth and reduce weight. They have a slim cut and a snug fit, allowing you to roll over with the bag rather than inside it. Mummy bags often include a contoured hood that can be cinched tight for added warmth. This shape is ideal for backpacking as it minimizes weight and bulk, making it easier to carry in a pack.
When choosing a sleeping bag, it's important to consider your specific needs and preferences. If you prioritize comfort and space, a rectangular bag may be best. If you need a lightweight option for backpacking, a mummy bag could be the right choice. Semi-rectangular bags offer a versatile middle ground between the two. Additionally, factors like insulation type, temperature rating, and zipper features should also be considered to ensure you get a good night's sleep during your outdoor adventures.
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Sleeping bag temperature ratings
There are two main temperature rating standards for sleeping bags: EN (European Norm), which was the original standard, and ISO (International Standards Organization), which is the newer standard. These standardized tests allow consumers to compare temperature ratings between different brands of sleeping bags. Sleeping bags with an ISO or EN rating will have two temperature ratings: a comfort rating and a limit rating. The comfort rating indicates the temperature at which a cold sleeper might feel comfortable, while the limit rating indicates the temperature at which a warm sleeper might still be comfortable. The comfort rating is typically used for women's bags, while the limit rating is used for men's or unisex bags.
When choosing a sleeping bag, it is generally recommended to select one with a temperature rating that is lower than the lowest temperature you expect to encounter. This is because you can always unzip a bag that feels too warm, but it's important to have a bag that will keep you warm enough if the temperature drops unexpectedly. Additionally, factors such as the type of insulation, the shape of the bag, and extra features like stash pockets and hoods can also affect the warmth and functionality of a sleeping bag.
It's worth noting that temperature ratings are based on an "average sleeper", and individual factors such as metabolism, clothing, and gear can affect how warm or cold you feel when using a sleeping bag. Therefore, it's a good idea to consider your personal preferences and sleep habits when choosing a sleeping bag, and to prioritize features that will enhance your comfort and warmth.
In terms of the different types of sleeping bags, there are three basic shapes: rectangular, semi-rectangular or modified mummy, and mummy. Rectangular bags offer the most room to move around, while semi-rectangular bags offer a compromise between warmth and roominess. Mummy bags are designed to be snug and boost warmth while reducing weight, making them a popular choice for backpacking. Double sleeping bags are also available for couples, and some rectangular bags can be zipped together to form a double bag.
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Sleeping bag insulation: down vs synthetic
When choosing a sleeping bag, it's important to consider the type of insulation. Sleeping bag insulation is usually down or synthetic, and both have their pros and cons.
Down insulation is the soft, fluffy, wispy plumage found underneath the exterior feathers of waterfowl such as ducks and geese. It is not made from the feathers of a bird, as is a common misconception. The advantage of down insulation is that it achieves a certain temperature rating with less fill, making the sleeping bag lighter. However, down loses its insulating properties when it gets wet, and it tends to clump up and lose loft. Some manufacturers have treated down at a microscopic level with a water-resistant application to address this issue. However, even treated down will get wet if submerged in water or exposed to heavy rain.
Synthetic insulation, on the other hand, is typically made of polyester. It is quick-drying and insulates even when wet, which is something down struggles to do. Synthetic insulation is also usually less expensive, more durable, and hypoallergenic. However, synthetic insulation tends to be heavier and less compressible than down.
Some manufacturers make sleeping bags with a combination of water-resistant down and synthetic insulation to provide the benefits of both materials while limiting their imperfections. When deciding between down and synthetic insulation, consider the weather conditions you're likely to encounter, your budget, and your desired weight and compressibility.
In addition to insulation, other factors to consider when choosing a sleeping bag include temperature rating, shape, and extra features. Temperature ratings indicate the lowest temperature at which a bag is designed to keep a sleeper comfortable, but they are not a guarantee of warmth. Sleeping bags come in various shapes, including rectangular, semi-rectangular or barrel, and mummy. Rectangular bags offer more room to move around, while mummy bags are more snug and efficient at retaining warmth. Extra features such as stash pockets, pad compatibility, and adjustment options can also enhance the functionality of a sleeping bag.
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Sleeping bag weight and packability
When choosing a sleeping bag, weight and packability are important considerations. If you're backpacking, you'll want a lightweight sleeping bag that packs down small. On the other hand, if you're car camping, weight and bulk are less of a concern, and you can prioritise warmth and comfort.
Backpacking sleeping bags are designed to be light and snug. They pack down smaller and provide more warmth for their weight compared to camping sleeping bags. If you're using one bag for both activities, choose a backpacking style as you'll need it to be lightweight and packable if you're carrying it in a pack.
The weight of a sleeping bag is influenced by the insulation type and bag shape. Down insulation is generally lighter than synthetic insulation. Mummy-shaped bags are designed to boost warmth and cut weight, with a snug fit that prevents you from rolling over inside the bag. Semi-rectangular or barrel-shaped bags offer a compromise between warmth and roominess, while rectangular bags provide ample room to move around but are bulkier.
Temperature rating is another critical factor affecting weight and packability. Choose a bag with a lower temperature rating than the lowest anticipated temperature during your trip. The comfort rating indicates the lowest temperature at which the bag will keep a "cold sleeper" comfortable, while the limit rating is for a "warm sleeper". The sleep system, including the R-value of your sleeping pad and your clothing, also impacts your overall warmth and comfort.
Some additional features that affect weight and packability include draft-blocking details, a snug-fitting hood, extra zippers, and stash pockets. These features can add durability, warmth, and functionality to your sleeping bag.
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Sleeping bag features: stash pockets, hoods, and zippers
When choosing a sleeping bag, it's important to consider the features that will work best for you. Sleeping bags with stash pockets, hoods, and extra zippers can add more durability, warmth, and functionality to your bag.
Stash pockets are a handy feature to keep personal items like watches, phones, and lip balm close at hand. If you're looking for a sleeping bag with a stash pocket, the Teton and Big Agnes Sidewinder are two backpacking bags that include a zipped pocket accessible from the inside of the bag.
Hoods are typically found on bags with lower temperature ratings to make them warmer. Most hoods have drawcords that allow you to adjust the fit for more warmth. Some bags, like the Teton, have generous hoods that can accommodate a pillow. The REI Co-op Siesta Hooded 20 Sleeping Bag, for example, features a capacious "pillow barn" that can fit a standard pillow.
Zippers are important for adjusting ventilation. Bags with multiple zipper sliders make it easier to regulate temperature. Some bags have features to prevent zipper snagging, such as a guard along the length of the zipper or a cover over the zipper. The Teton, for instance, has two half-length zippers that make it easy to get in and out of the bag and also allow for temperature regulation.
In addition to these features, other factors to consider when choosing a sleeping bag include the type of insulation, weight, temperature rating, and shape. Backpacking bags tend to be more lightweight and snug, while camping bags offer more room to move around. It's also recommended to select a sleeping bag with a lower temperature rating than the lowest anticipated temperature during your trip.
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Frequently asked questions
There are three main types of sleeping bags available at REI: rectangular, semi-rectangular (or barrel-shaped), and mummy-style. Rectangular bags provide ample room for legs and arms to stretch out and can sometimes be fully unzipped to be used as a comforter. Semi-rectangular bags offer a compromise between warmth and roominess, while mummy-style bags are snug to retain warmth and reduce weight.
When choosing an REI sleeping bag for backpacking, it is important to consider the following:
- Temperature rating: Choose a bag with a lower rating than the typical low temperatures you expect.
- Sleep system: Your comfort depends on variables such as the R-value of your sleeping pad and your clothing.
- Type of insulation: Consider the pros and cons of down vs. synthetic insulation.
- Weight: Lighter bags are generally more convenient for backpacking.
- Additional features: Look for stash pockets, draft-blocking details, and a snug-fitting hood for added durability and functionality.
Camping sleeping bags typically offer more room to move around, while backpacking bags are designed to be lightweight and compact. If you plan to use the bag for both activities, it is generally recommended to choose a backpacking-style bag, as it will be more convenient to carry in a pack.
