Miya Pearson
A good 0-degree sleeping bag is essential for cold-weather camping and hiking trips. While there are many winter sleeping bags on the market, it's important to do your research to ensure your bag is warm and well-built. Temperature ratings can be misleading, as they may refer to the lower limit for safe use rather than comfort. To stay toasty in freezing temperatures, consider a bag with high-quality fill power and high fill weight, which will provide exceptional loft and insulation. Sleeping quilts are also a popular option for ultralight enthusiasts, offering warmth and packability. When choosing a 0-degree sleeping bag, it's crucial to prioritize warmth and comfort, especially for cold winter nights.
| Characteristics | Values |
|---|---|
| Temperature Rating | 0°F |
| Weight | Varies, e.g. 2 lbs, 14 oz. (Mountain Hardwear Phantom 0), 3 lbs, 4 oz. (Kelty Cosmic Down 0) |
| Fill | Down or synthetic. E.g. 550-fill down (Kelty Cosmic Down 0), 850-fill down (Mountain Hardwear Phantom 0) |
| Packability | Compressible bags are ideal for backpacking. E.g. Mountain Hardwear Phantom 0 |
| Price | Varies, e.g. Under $300 (Kelty Cosmic Down 0), $600 (Zpacks Mummy Sleeping Bag), $780 (Feathered Friends Murre ES 0) |
| Brands | Kelty, Mountain Hardwear, Marmot, Western Mountaineering, Feathered Friends, Zpacks, Thermarest, Montbell |
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What You'll Learn
Sleeping quilts
If you're looking for a 0-degree sleeping bag, there are several options to choose from. A good 0-degree sleeping bag is essential if you plan to camp in cold weather. Sleeping quilts are popular among ultralight enthusiasts as they provide sleeping-bag-like warmth for less weight and bulk. Quilts are the specialty of Minnesota-based Enlightened Equipment, and their Enigma quilt tops our list. With 12.4 ounces of 850-fill down, the Enigma packs a punch and is a great value at $330. Enlightened Equipment quilts offer a wide variety of sizes and options for customization, including various nylon shells and temperature ratings (0 to 50 degrees F).
Another excellent option for a 0-degree quilt is the Hammock Gear Burrow UL, which is our pick for the warmest ultralight 0-degree quilt when overfilled with +4 oz of down. This quilt has more uncompressed down volume than any other premium model, making it noticeably warmer. While it is a few ounces heavier than the Enlightened Equipment Enigma, the Hammock Gear Burrow UL is ideal for those seeking maximum warmth.
For those seeking a traditional sleeping bag, the Kelty Cosmic Down 0 offers a great balance of comfort and price at under $300. This bag features a continuous draft tube to prevent cold air from seeping through the zipper and trapezoid-shaped baffles to trap the 550-fill down insulation in place. Additionally, it includes several convenient features such as an internal zippered stash pocket, a hood cinch, a neck baffle, and a two-way zipper for venting heat.
If pack weight is a priority, the Mountain Hardwear Phantom 0 is a svelte and no-frills option that has been a favourite among backpackers for years. This bag features premium 850-fill goose down insulation packed into a 10-denier nylon ripstop outer shell, making it highly packable and compressible. A thick draft collar helps to trap warm air around the body, and a two-way zipper allows for easy adjustment in warmer weather.
For those who only occasionally camp in winter, using two sleep systems (one for summer and one for shoulder seasons) can provide three temperature ratings at a lower cost than a single sleep system for winter. For example, combining a 40°F quilt for summer and a 20°F quilt for shoulder seasons can provide a -10°F rating when used together. However, it is important to note that using quilts or sleeping bags below -10°F requires experience and well-thought-out insulation, including a designated cold-weather sleeping pad and head insulation.
When choosing a sleeping quilt or bag, it is essential to consider your specific needs and preferences, such as weight, packability, comfort, and features. Additionally, remember to prioritize adequate insulation, including a good sleeping pad with a high R-value, to ensure a warm and comfortable night's sleep during your cold-weather adventures.
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Sleeping bag temperature ratings
When choosing a sleeping bag, the key factor to consider is its temperature rating. The temperature rating of a sleeping bag is an estimate of how warm the bag will keep you. Lab-tested temperature ratings, indicated by "EN" (European Norm) or "ISO" (International Standards Organization) ratings, are useful for comparing sleeping bags from different brands.
There are typically three rating categories: international standards from EN or ISO, trustworthy homebrew ratings (usually from cottage companies), and ratings from untrustworthy companies who may cheat the system. The EN/ISO standards include tests using a heated mannequin wearing light clothing and a well-insulated pad. The three main ratings are:
- Upper Limit: the temperature at which a standard male can sleep without excessive perspiration, with the hood and zippers open, and arms outside the bag.
- Comfort: the temperature at which a standard female can expect to sleep comfortably in a relaxed position. This is the temperature rating typically used for women's bags.
- Lower Limit: the temperature at which a standard man can sleep for eight hours in a curled position without waking. This is the temperature rating typically used for men's bags.
It's important to note that temperature ratings are estimates, and the comfort level of a sleeping bag in the outdoors may differ from its tested temperature rating due to various factors such as differences in clothing, gear, body types, weather conditions, etc. Therefore, it's recommended to choose a sleeping bag with a comfort rating slightly lower than the lowest temperature you expect to encounter.
When looking for a 0-degree sleeping bag, some options to consider are the Kelty Cosmic Down 0, which provides a great balance of comfort and price, and the Mountain Hardwear Phantom 0, which is a svelte and compact option popular among backpackers. Additionally, the Mountain Hardwear Bishop Pass 0 and the Sea to Summit Spark 0F also have good reviews.
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Sleeping bag weight
When choosing a sleeping bag, it's important to consider the trade-off between its warmth and its weight. The warmer the bag, the heavier and bigger it will likely be. For example, the Kelty Cosmic Down 0 sleeping bag, which costs under $300, weighs 3 lbs 4 oz and is considered a little heavy. The Mountain Hardwear Phantom 0, a popular bag among backpackers, is a more lightweight option at 2 lbs 14 oz.
The weight of a sleeping bag is largely determined by its insulation. Down insulation is the lightest insulator, but it is also more expensive. Bags with down fill are also not as effective when wet. Synthetic bags are a more affordable option, but they do not pack down as small.
The weight of a sleeping bag is also influenced by its temperature rating. As a sleeping bag's weight decreases, its temperature rating increases. Warmer bags have more down fill and therefore require more shell fabric to contain it.
Sleeping quilts are a popular option for ultralight enthusiasts as they provide sleeping-bag-like warmth for noticeably less weight and bulk. For example, the Enlightened Equipment Enigma packs 12.4 ounces of 850-fill down and weighs just 12.4 ounces.
When choosing a sleeping bag, it's important to consider the intended use. If you're backpacking, the weight of your bag will be more important than if you're car camping. It's also crucial to get a good sleeping pad with a high R-value to ensure the effectiveness of your bag.
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Sleeping bag features
When choosing a 0-degree sleeping bag, it's important to consider the features that will make your outdoor experience comfortable and safe. Here are some key features to look for:
Temperature Rating: A sleeping bag's temperature rating indicates the lowest temperature at which it will keep you warm. A true 0-degree bag should keep you comfortable at temperatures down to 0 degrees Fahrenheit. However, it's important to note that temperature ratings are not always standardized, and some companies advertise the lower limit for safe use rather than comfort. Consider the temperatures you'll be camping in and choose a bag rated for lower temperatures to ensure you stay warm.
Insulation and Fill: The type and amount of insulation in a sleeping bag affect its warmth and weight. Down insulation, made from goose or duck feathers, is known for its warmth, lightweight, and compressibility. It's often measured in "fill power", with higher numbers indicating better insulation. Synthetic insulation is less expensive, but it's usually heavier and less compressible. It performs better than down when wet.
Weight and Packability: If you're backpacking or hiking, the weight and packability of your sleeping bag matter. Down bags are generally lighter and more compressible, making them ideal for backpacking. Synthetic bags are usually bulkier and heavier, but they can still be a good choice if you're car camping or don't need to carry your gear long distances.
Draft Collar and Zipper: A draft collar is a tube of insulation around the head opening of the bag that helps prevent heat loss. It's an important feature for cold-weather bags. Look for a bag with a well-designed draft collar that fits snugly around your neck or head. Additionally, consider a bag with a two-way zipper that allows you to vent heat on warmer nights.
Comfort and Fit: Choose a sleeping bag that is comfortable and fits your body type. Some bags have a "mummy" shape, which is narrower at the feet for better heat retention but may feel constricting for some people. Others have a more traditional rectangular shape with more room to move around. Women's sleeping bags typically have a roomier cut, shorter length, and additional insulation.
Durability: Look for a sleeping bag made with durable materials and sturdy construction. Check reviews to see if there are any common issues with durability, such as fabric punctures or zipper snags. A good sleeping bag should last for many camping trips.
Remember, when choosing a 0-degree sleeping bag, it's crucial to prioritize warmth, comfort, and durability. Consider your specific needs and the conditions you'll be camping in to make an informed decision.
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Top-rated 0-degree sleeping bags
A good 0-degree sleeping bag is essential if you plan to camp in cold weather. While there are many decent winter sleeping bags on the market, some extra research can help ensure your bag is warm and well-built. Here are some top-rated 0-degree sleeping bags to consider:
Kelty Cosmic Down 0
The Kelty Cosmic Down 0 sleeping bag offers a great balance of comfort and price. At under $300, it is one of the most affordable options for a down sleeping bag. It features a continuous draft tube to prevent cold air from seeping through the zipper, and trapezoid-shaped baffles that keep the 550-fill down insulation in place. Additional features include an internal zippered stash pocket, a hood cinch, a neck baffle, and a two-way zipper for ventilation. While the bag may not be as soft as some others on the market, its durable materials promise longevity. One thing to note is that this bag has a 17-degree EN comfort rating, making it slightly less warm than other models. It also weighs over 4 pounds, which is a bit on the heavier side.
Mountain Hardwear Phantom 0
The Mountain Hardwear Phantom 0 is a popular choice among backpackers, known for its svelte and no-frills design. It features premium 850-fill goose down insulation packed into a 10-denier nylon ripstop outer shell. This combination of high-quality materials makes the Phantom 0 highly packable and easy to compress into a small stuff sack of under 10 liters. A thick draft collar helps trap warm air around the body, and a two-way zipper allows for easy adjustment in warmer weather. Women’s 0-degree sleeping bags can be harder to find, but Mountain Hardwear offers a roomier cut with additional insulation, as women tend to sleep colder than men.
Western Mountaineering Kodiak MF
The Western Mountaineering Kodiak MF is praised for its exceptional warmth, weather resistance, and lightweight design. It is a top pick for many, offering impressive performance in cold weather conditions. While it is a more expensive option, its durability and reliability make it a worthwhile investment for winter camping and outdoor adventures.
Feathered Friends Snowbunting ES 0 Degree
The Feathered Friends Snowbunting ES 0 Degree bag stands out for its quality construction and sturdy materials. It features a robust 15D Pertex Shield fabric with 40D ripstop reinforcement and a 3 Layer Pertex Shield Air Panel. The stitching is stable, the zippers are excellent, and the overall construction is solid. This bag is expected to last through many outdoor adventures without showing significant wear and tear.
Mountain Trapper
The Mountain Trapper is an excellent entry-level sleeping bag for car campers seeking a simple, comfortable, and warm option. While it may not be as compact or lightweight as some other bags, it provides a great balance of features and performance for the price.
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Frequently asked questions
Some good 0-degree sleeping bags for backpacking include the Zpacks Classic 30-degree sleeping bag, the Mountain Hardwear Phantom 0, the Kelty Cosmic Down 0, the Western Mountaineering VersaLite, and the Feathered Friends Snowbunting ES 0 Degree.
Women's 0-degree sleeping bags can be hard to find, but the Mountain Hardwear brand offers a roomier cut and shorter length with more insulation, as women tend to sleep colder than men.
For winter camping, a cold-weather sleeping bag must be able to withstand some moisture. The Never Summer 0 is a popular choice for winter surf trips in Maine. The Mountain Hardwear Lamina is another synthetic bag option that holds more warmth when wet than down does.
When buying a 0-degree sleeping bag, it's important to look for a bag that is lightweight and packable, but also warm and comfortable. It should have a high fill power and fill weight to keep you warm by holding more insulating air between you and the outside air. Additionally, it should have a good rating for durability and should be paired with a good sleeping pad with a high R-value to provide insulation from the ground.
