Miya Pearson
Choosing the right sleeping bag is essential for a good night's sleep and can make or break your camping experience. Sleeping bags come in various shapes, sizes, and types, and the right one for you will depend on factors such as the location, season, and purpose of your camping trip. This article will explore the key considerations for choosing a sleeping bag, including temperature ratings, insulation type, shape, and weight, to help you make an informed decision and get a restful night's sleep under the stars.
| Characteristics | Values |
|---|---|
| Temperature rating | Choose a bag with a temperature rating suitable for the season and location. Bags with a lower temperature rating will keep you warmer. |
| Insulation | Choose between down and synthetic insulation. Down is lighter, more compressible, durable and has a better weight-to-warmth ratio but is more expensive. Synthetic insulation is more affordable, keeps you warmer in wet conditions and dries quickly. |
| Shape | Sleeping bags come in rectangular, semi-rectangular and mummy shapes. Mummy bags provide a warmer sleep due to their form-hugging design, while rectangular bags allow more room to move. |
| Accessories | Sleeping bag liners keep the bag clean and add extra warmth. |
| Intended use | Bags for backpacking are lighter and more compact, while camping bags are heavier and roomier. |
| Hood | Look for an adjustable hood that seals well around the face if you are a cold sleeper or camping in cold weather. |
| Neck baffle | A neck baffle or draught excluder provides extra warmth and prevents heat from escaping. |
| Zip baffle | An internal tube of insulation covering the zip prevents heat from escaping. |
| Zip | Full-length zips are easier to use, while half-length zips save weight. |
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What You'll Learn
Sleeping bag insulation: down or synthetic
Sleeping bags with down insulation are made from the soft, wispy plumage found underneath the exterior feathers of waterfowl, such as geese and ducks. Down sleeping bags are incredibly warm and lightweight, with an excellent warmth-to-weight ratio. They are also highly compressible, making them ideal for situations where pack space is important, such as multi-day hiking or backpacking trips. Additionally, down bags are typically more comfortable as they adjust better to temperature fluctuations. However, one of the biggest disadvantages of down is its performance when wet. When down gets wet, the feathers stick together, causing it to lose its loft and insulating properties, and it takes a very long time to dry.
On the other hand, synthetic sleeping bags get their insulation from man-made materials, usually some form of polyester fibre that mimics the natural lofting and insulating properties of down. Synthetic sleeping bags can provide the same amount of warmth as down sleeping bags, but they weigh more. Synthetic insulation is also less absorbent than down, so while some water may get trapped on the surface of the fibres, the structure can still retain some air pockets, allowing for some level of insulation even when wet. Synthetic insulation dries faster than down and is generally considered superior in terms of water resistance. However, synthetic insulation will not pack down as small as down and may not last as long, with concerns about the retention of its loft over time.
When choosing between down and synthetic insulation, it is important to consider how and where you will be using your sleeping bag. If you prioritise warmth, lightweight design, compressibility, and comfort, a down sleeping bag may be the best option. If you anticipate camping in wet or humid conditions, synthetic insulation might be preferable due to its water-resistant properties and faster drying time. Additionally, if cost is a factor, synthetic sleeping bags tend to be more affordable than high-quality down alternatives.
It is worth noting that there is no universal standard for synthetic insulation, so researching specific synthetic sleeping bags before purchasing is essential. Ethical considerations may also influence your decision, as the process of harvesting down can be controversial. However, there are ethically sourced down products available, and certifications like the Responsible Down Standard (RDS) or the global Traceable Down Standard (TDS) ensure the humane treatment of birds.
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Temperature ratings
The temperature rating of a sleeping bag is one of the most important factors in choosing the right one for you. The temperature rating identifies the lowest temperature at which the bag is designed to keep an "average sleeper" warm. The warmth of a sleeping bag is often advertised as its temperature rating. However, it's important to remember that many companies choose their own temperature ratings, so comparison between companies can be limited. Most bags are rated according to an industry-standard EN or ISO test, which provides a more consistent measure of warmth.
When deciding on a sleeping bag, choose one with a temperature rating that is a little lower than the typical low temperatures you expect to encounter. For example, if you plan to camp in 5°C weather, choose a bag with a 0°C rating. You can always open up a bag to cool down when conditions are warmer, but it's hard to get warm in a bag that's too light. If you're a warm sleeper, use the bag's "lower limit" rating, and if you're a cold sleeper, use its "comfort" rating.
Season ratings are a simple, common-sense method of determining the suitability of your sleeping bag for use throughout the year. 1 season bags are for summer, 2 season for spring and summer, 3 season for spring, summer and autumn, and 4 season for all year round. A bag with a 30°F rating should be warm enough for most spring and fall conditions while also not being too stifling in the summer months. Bags with ratings of 30°F and higher are typically used in the summer, 15°F-30°F in spring and autumn, and 15°F and lower in winter.
The temperature rating of a bag is also influenced by its shape. Mummy bags will provide a warmer sleep due to their form-hugging design, while rectangular bags are perfect for camping in the summer if you move a lot in your sleep.
Other factors that can affect your warmth include the type of shelter you're in, the sleeping surface beneath you, the type and quality of your sleeping pad, your metabolism, and what you wear to bed.
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Sleeping bag liners
Liners are particularly useful for camping in the UK, where the climate is often cold and wet. They can help boost the warmth of your bag without having to invest in a winter sleeping bag. Liners can also be used on their own in hot weather, and some are designed to wick moisture, keeping you cool and comfortable.
There are a variety of materials to choose from when selecting a liner, including silk, fleece, microfiber, and wool. Silk liners are lightweight and pack down small, making them ideal for backpacking. They are also breathable, keeping you cool in warm conditions and cosy in cold conditions. Microfiber liners are also lightweight and easy to pack, and they can add warmth to your sleeping bag in cold conditions. Fleece liners are a good option for very cold conditions, as they add extra warmth.
Liners are available at a range of price points, with some starting under $50 and higher-end models costing over $100.
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Sleeping bag shapes
Sleeping bags come in three basic shapes: rectangular, semi-rectangular (or mummy), and double. Rectangular sleeping bags allow plenty of room for your legs and arms to stretch out, and some can be completely unzipped and used like a comforter, making them perfect for camping in the summer if you move a lot in your sleep. Mummy bags, on the other hand, will provide you with a warmer sleep due to their form-hugging design. If you're planning on sleeping with a partner, you can either choose a double sleeping bag or two rectangular bags designed to be zipped together.
If you're backpacking, you'll want to pick the lightest, most packable bag within your budget. Down bags are generally more expensive, lighter, more compressible, and more durable than synthetic bags. They also have a better weight-to-warmth ratio, making them ideal sleeping companions for trips where weight and space are at a premium. However, synthetic bags are more affordable, can keep you warmer in wet conditions, and dry quickly, making them a good choice for car camping or spending nights in damp environments.
When deciding on a sleeping bag for backpacking, consider the temperature rating, sleep system, type of insulation, weight, and features. The temperature rating of a sleeping bag is supposed to indicate the lowest temperature at which the bag should be able to keep you warm enough for sleeping. However, it's important to remember that this rating is based on an "average sleeper", and many other factors will affect how warm you feel, such as your sleeping pad, what you wear to sleep, humidity, wind, and your metabolism. Therefore, it's generally recommended to choose a bag with a lower temperature rating than you expect to need, as you can always open up the bag to cool down if conditions are warmer.
In addition to the shape and type of insulation, you may also want to consider the hood, neck baffle, zip baffle, and zip when choosing a sleeping bag. If you're a cold sleeper or heading somewhere cold, a good hood is essential. Look for a hood that is fully adjustable and seals well around the face. A neck baffle, also known as a draught excluder, is an extra tube of insulation sewn into the neck area to prevent heat from escaping or cold from getting in. A zip baffle serves a similar function, covering the zip to prevent heat from escaping. Finally, consider whether you want a full, three-quarter, or half-length zip. Full zips are easier to use and better for venting, while half-length zips save weight and require less stitching.
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Sleeping bag zips
When choosing a sleeping bag zip, it is important to consider the intended use of the sleeping bag. If the sleeping bag is for camping, a full-length zip may be preferable for ease of use and ventilation. However, if the sleeping bag is for backpacking, a half-length zip may be preferred to save weight and space.
The durability of the zip is also an important consideration. Nylon coil zippers are known for their durability and self-repairing capabilities. Metal zippers, such as brass or aluminium zippers, are also durable and suitable for camping and outdoor use.
In some cases, sleeping bag zips may need to be replaced due to wear and tear. Replacement zippers are available in various lengths and styles, but the process of replacing a zipper can be challenging, and it may be necessary to seek professional help or consider purchasing a new sleeping bag.
Finally, it is worth noting that sleeping bag zips can also be used to connect two compatible bags together to create a double sleeping bag. This is a useful feature for couples or families who want to sleep together while camping.
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Frequently asked questions
The three main criteria to consider when choosing a sleeping bag are temperature rating, fill type, and shape.
The best shape for a sleeping bag depends on how you sleep and the conditions. Mummy-shaped bags are good for colder weather due to their form-hugging design, whereas rectangular bags are better for those who move around a lot in their sleep or summer camping.
The two main types of insulation are down and synthetic. Down is more expensive, lighter, more compressible, and durable, whereas synthetic insulation is more affordable, dries quickly, and keeps you warmer in wet conditions.
