Sleeping Bag Shopping: How Many To Buy?

how many sleeping bag

The number of sleeping bags one should bring while camping depends on several factors, including the type of camping, the weather, and personal preference. For car camping, weight and bulk are less of a concern, so you can choose a warmer and roomier option. Backpacking sleeping bags, on the other hand, are designed to be lightweight and compact. Additionally, the temperature rating of the sleeping bag is crucial, as it indicates the lowest temperature at which the bag will keep you warm. Other considerations include the type of insulation, the presence of a sleeping pad, and additional features such as pillow pockets or compression sacks. Some campers may prefer to have multiple sleeping bags for different seasons or weather conditions, while others may opt for a single versatile option.

Characteristics Values
Types Camping, backpacking, kids, mummy, double, rectangular, semirectangular, lightweight, cold weather, ultralight, compression sack, etc.
Insulation Down, synthetic, treated down (water-repellent)
Temperature Rating Varied ratings for different seasons and weather conditions, e.g., 50 F, 35 F, 32-59 F, 0 C, 20 F, 30 F, -9 F to 10 F, 11 F to 34 F, 35 F and above
Size Regular, long, short, wide
Features Stash pocket, stuff sack, storage sack, sleeping bag liner, draft-blocking, snug-fitting hood, extra zippers, loops, etc.
Price $19.97 to $1998 (based on the sources provided)

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Sleeping bag temperature ratings

Sleeping bags are assigned temperature ratings based on standardised laboratory tests. The ISO (International Standards Organization) oversees bag testing, which involves placing a test dummy inside the bag, dressed in base layers, and placing a sleeping pad underneath the bag. This process is designed to simulate real-world usage and provide an estimate of the bag's warmth.

There are three main rating categories: international standards from EN (European Norm) or ISO, trustworthy "homebrew" ratings from smaller companies, and ratings from untrustworthy companies that may cheat the system. The EN and ISO tests include a heated mannequin wearing light clothing and using a well-insulated pad.

The EN 13537 standards specify four temperature ratings: Upper Limit, Comfort, Lower Limit, and Extreme. The Upper Limit is the temperature at which a standard male can sleep without excessive perspiration, with the hood and zippers open. The Comfort rating is the temperature at which a standard female can expect to sleep comfortably in a relaxed position. The Lower Limit is the temperature at which a standard male can sleep for eight hours in a curled position without waking. The Extreme rating means a woman won't die of hypothermia within six hours at that temperature.

It's important to note that temperature ratings are not a guarantee of warmth. They are estimates and can vary depending on factors such as clothing, gear, body type, weather conditions, and personal preferences. When choosing a sleeping bag, it is generally recommended to select one with a temperature rating slightly lower than the coldest conditions you anticipate. This will ensure you stay warm and comfortable during your outdoor adventures.

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Backpacking vs camping bags

When choosing a sleeping bag, the first thing to consider is what activity you need it for. Will you be camping in the front country, backpacking for an extended period, mountaineering, or packrafting? The weight, shape, and features of sleeping bags are often designed with specific end-uses in mind, so it's important to choose one that suits your needs.

Camping sleeping bags are typically heavier and bulkier, with a focus on comfort. They usually have a simple rectangular design, providing ample room to stretch out and roll over. They are ideal for family car camping trips and front country sojourns, and because they are less technical, they are also more affordable. When choosing a camping sleeping bag, you can prioritise space and comfort, and you don't need to worry about weight or pack size.

On the other hand, backpacking sleeping bags tend to be more lightweight and pack down smaller. They are designed to be carried in a pack, so every ounce counts. The trick to picking the right backpacking sleeping bag is balancing weight and compressibility with warmth. A bag with a sleek shape and a snug fit will be lighter than a roomier option. Mummy bags are the lightest traditional sleeping bags, with a slim cut and a contoured hood that boosts warmth and reduces weight.

Both camping and backpacking sleeping bags have temperature ratings, indicating the lowest temperature at which the bag will keep an "average sleeper" warm. It is generally recommended to select a bag with a rating lower than the lowest temperature you expect to encounter, as you can always unzip the bag if it gets too warm. However, it's important to note that temperature ratings are based on averages, and individual factors such as metabolism and sleeping attire can also affect how warm you feel.

Sleeping bag liners are also an option for both camping and backpacking. They help keep your bag clean and add extra warmth when needed. In hot weather, you can skip the bag and just use the liner.

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Sleeping bag liners

Liners are available in a range of materials, including silk, fleece, microfiber, wool, Tencel, silk blends, and thermal boost. The material you choose will depend on the conditions you are sleeping in. For example, silk liners are lightweight and breathable, making them suitable for rugged outdoor conditions, whereas thermal boost liners are designed for colder conditions. Liners can also be used to manage moisture in warm and humid conditions.

Liners are also a good way to add warmth to your sleeping bag. The amount of warmth added will depend on the sleeping bag's ability to retain warmth, the R-value of the sleeping pad, and external conditions. Liners can also be used independently of the sleeping bag, as a stand-alone sleeping bag.

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Sleeping bag hoods

Benefits of Sleeping Bag Hoods:

Types of Sleeping Bag Hoods:

Considerations for Choosing a Sleeping Bag with a Hood:

When selecting a sleeping bag with a hood, it is essential to consider the temperature rating of the bag. The hood plays a significant role in the overall warmth of the sleeping bag, so choosing a bag with a temperature rating suitable for the conditions you anticipate is vital. Additionally, pay attention to the materials used in the hood's construction. Look for materials that are breathable, soft, and comfortable while still providing effective insulation. The outer shell of the hood should ideally be treated with a durable water repellent (DWR) finish to prevent moisture from seeping through and dampening the insulation.

Other Features to Look For:

In addition to the hood, there are several other features that can enhance the performance and comfort of your sleeping bag. Consider the type of insulation, opting for either down or synthetic fill based on your specific needs and budget. Down insulation is typically more expensive but offers superior warmth in cold and dry conditions. On the other hand, synthetic insulation is more affordable and continues to insulate even when damp, making it a good choice for damp environments. Other features to look for include draft collars, which prevent heat loss from the neck area, and stash pockets for convenient storage of small items.

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Sleeping bag fabric

The shell, or exterior, of a sleeping bag is important for water resistance and durability. The lining facilitates the transfer of moisture away from the body. The mummy bag is the most effective bag for managing thermal efficiency while reducing weight.

Nylon, polyester, and taffeta are commonly used materials for sleeping bag shells and linings. Taffeta is a traditional fabric for formal dresses, but it is also a synthetic option for sleeping bag liners. It is similar to polyester and nylon but usually slightly better in quality.

Polyester and nylon are synthetic materials that provide a high level of comfort while remaining breathable, so the user doesn't overheat. They are quite affordable but not as durable as other fabrics. For a soft and smooth fabric, either of these two materials is a good choice for the outer shell of a sleeping bag.

Some sleeping bags use silk, which is extremely soft, breathable, and disperses heat well. However, silk is very expensive and prone to tearing. Brushed cotton, flannel, or fleece are also used, typically for recreational bags better suited for car camping.

Microfiber is a lightweight fabric with a tight weave that easily repels water. It is one of the best shells for water resistance and has some degree of windproofing. However, it is not as durable as ripstop, a fabric that can withstand rough terrain but is not ideal for wet conditions.

Dryloft is the most expensive material for sleeping bags. It is water-resistant and breathable, making it suitable for cold and wet weather, especially when using down filler for insulation.

Frequently asked questions

The number of sleeping bags you need depends on the type of camping you plan to do. If you're car camping, you can bring as many sleeping bags as you like, as your vehicle will be doing the heavy lifting. If you're backpacking, you'll want to minimise weight and bulk, so one sleeping bag per person is recommended.

It depends on where you live and the seasons you experience. If you camp in all seasons, you may want to invest in a warmer sleeping bag for the colder months. However, you can also adjust for warmth by using a sleeping bag liner, which adds extra warmth and helps keep your bag clean.

Yes, there are double sleeping bags designed for couples. The Kelty TruComfort Doublewide 20 and the Dream Island are popular options. Alternatively, you can choose rectangular sleeping bags designed to zip together, as long as they are the same model and brand.

Yes, some sleeping bags are designed for hot sleepers or warmer climates. Sleeping bag liners can also be used on their own in hot weather. Look for bags with a lower temperature rating than the lowest nighttime temperature you expect.

The REI Co-op Siesta Hooded 20 Sleeping Bag is a popular option for car camping, as it provides plenty of room to move around in. The Marmot Women's Teton 15° Sleeping Bag is another top pick, known for its warmth and soft, fluffy feel.

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