Herbie Murray
Selecting a sleeping bag is a crucial step in planning any outdoor adventure. The right sleeping bag will keep you warm and comfortable, ensuring you wake up well-rested and ready for the day ahead. When choosing a sleeping bag, it's important to consider factors such as temperature rating, insulation type, bag shape, weight, and size. Whether you're car camping or backpacking will also impact your decision, as camping bags tend to be roomier, while backpacking bags prioritize lightweight, packable designs. Understanding the different features and options available will help you make an informed choice and ensure you get a good night's sleep during your outdoor excursions.
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What You'll Learn
Sleeping bag shape: rectangular, semi-rectangular, or mummy
The shape of a sleeping bag is an important factor in determining how well it will suit your needs. The three most common sleeping bag shapes are rectangular, semi-rectangular, and mummy.
Rectangular sleeping bags are perfect for those who like to stretch out and move around a lot in their sleep. They are also ideal for camping in the summer. Some rectangular bags can be unzipped entirely to make a large comforter, which is perfect for when you are sleeping with a partner. However, rectangular bags can be bulky, so they are best suited for car camping rather than hiking.
Semi-rectangular sleeping bags are a good middle ground between rectangular and mummy-shaped bags. They have a slightly tapered shoulder area to prevent draughts, while providing a little more room than mummy bags around the feet. This makes them a good option for campers who need more warmth than a rectangular bag can offer, but who don't like the restrictive feel of a mummy bag.
Mummy bags are tapered, being wider at the shoulders and narrower at the feet. This form-fitting design helps retain heat more efficiently, making them suitable for cold-weather camping and backpacking. They are also more lightweight and packable, making them a good choice for backpackers and hikers who need to save space. However, the main criticism of mummy bags is that they can feel restrictive, particularly for those who move around a lot in their sleep.
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Temperature rating: select a bag with a lower rating than the lowest temperature you expect
When selecting a sleeping bag, the most important factor is its temperature rating. This is because the temperature rating identifies the lowest temperature at which a bag is designed to keep an "average sleeper" warm. Therefore, it is recommended to select a sleeping bag with a temperature rating that is lower than the lowest temperature you expect to encounter.
Sleeping bag temperature ratings are assigned by independent labs that conduct tests to determine the bag's warmth. The EN (European Norm) standard was originally adopted by the sleeping bag industry, but now the ISO (International Standards Organization) oversees bag testing. The ISO testing method is almost identical to the EN test, so you can compare EN-rated bags with newer ISO-rated bags.
It's important to understand that temperature ratings are estimates and are based on an "average sleeper." In reality, factors such as your sleeping pad, clothing, metabolism, humidity, and wind will affect how warm or cold you feel. Therefore, it's generally recommended to choose a bag with a lower temperature rating than you expect to need, as you can always unzip the bag to cool down if necessary.
When choosing a sleeping bag based on temperature ratings, it's also crucial to consider the type of insulation. Synthetic insulation is often more affordable, suitable for wet conditions, and quick-drying. On the other hand, down insulation typically offers a better weight-to-warmth ratio and is more packable. If you're car camping or dealing with damp environments, synthetic bags are a good choice. For activities like backpacking or mountaineering, where weight and space are crucial, down bags are usually preferred.
In addition to temperature ratings and insulation type, other factors to consider when selecting a sleeping bag include its shape, weight, and extra features. Mummy-shaped bags provide a warmer sleep due to their form-hugging design, while rectangular bags offer more room to move around and are ideal for summer camping. The weight of a sleeping bag is influenced by its insulation and shape, with more efficient insulations providing greater warmth for less weight. Finally, consider any additional features that are important to you, such as adjustment options, stash pockets, or pad compatibility.
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Insulation type: down or synthetic
When selecting a sleeping bag, it's important to consider the insulation type: down or synthetic. Both types have their own advantages and disadvantages, and the right choice depends on your specific needs and preferences.
Down sleeping bags offer a superior weight-to-warmth ratio, making them ideal for activities like backpacking, mountaineering, or bike-packing, where weight and space are crucial considerations. They are also more packable, making them a convenient option for travellers. Additionally, down insulation is often ethically sourced and PFC-free, ensuring peace of mind for environmentally conscious consumers.
On the other hand, synthetic sleeping bags have their own benefits. They are typically more affordable, making them a cost-effective option for those on a budget. Synthetic insulation performs well in wet conditions, keeping you warmer when camping in damp environments. It also dries quickly, which is advantageous if your bag gets wet during your trip. Synthetic bags can also be made from recycled materials, offering an eco-friendly choice.
The decision between down and synthetic insulation also depends on the expected weather conditions. If you're camping in cold, wet weather, a synthetic bag might be preferable due to its ability to retain warmth in damp conditions. In contrast, down bags are better suited for activities where weight and space are more important than the potential for wet weather.
It's worth noting that the shape of the sleeping bag also plays a role in temperature regulation. Mummy-shaped bags provide a warmer sleep due to their form-hugging design, while rectangular bags offer more room to move around, making them suitable for summer camping if you tend to roll over in your sleep.
Ultimately, the choice between down and synthetic insulation depends on your specific requirements, budget, and expected weather conditions. Consider your activity, the available space, and your preference for natural or synthetic materials to make an informed decision.
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Weight: consider how you'll be carrying your bag
If you're going camping, you'll want to consider how you'll be carrying your sleeping bag. If you're car camping, you won't need to worry about weight or packing your bag into a small space. You can go for the warmest, roomiest bag in your budget.
However, if you're backpacking, mountaineering, or bikepacking, weight and pack-down size are crucial. You'll be hauling your gear on your back, so you'll want to minimise weight and bulk. Choose the lightest, most packable bag within your budget.
Down bags have the best weight-to-warmth ratio and are more packable than synthetic bags. However, synthetic bags are often more affordable and can keep you warmer in wet conditions.
If you'll be using one bag for both camping and backpacking, choose a backpacking-style bag. Every ounce counts when you're carrying your gear in a pack.
When it comes to weight, consider the insulation type and the cut of your bag. The quality of your insulation will be a significant factor in the overall weight of your sleeping bag.
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Accessories: liners, pillows, and pads
When selecting a sleeping bag, it's important to consider the accessories that will enhance your comfort. Here are some essential accessories to consider:
Sleeping Bag Liners
Sleeping bag liners are a great addition to your sleeping bag setup. They serve multiple purposes, including keeping your bag clean and adding extra warmth. Liners are particularly useful when camping in hot weather, as you can sleep directly in the liner without the need for the bag itself. This helps regulate your body temperature and provides a more comfortable night's rest. Additionally, liners help keep your sleeping bag clean, reducing the need for frequent washing of the bag, which can be cumbersome.
Pillows
Bringing a pillow from home or investing in a specialised camping pillow can significantly impact your comfort during camping or backpacking trips. A good pillow will support your head and neck, ensuring a restful night's sleep. Inflatable pillows are a popular choice for outdoor activities as they are lightweight and easy to pack, ensuring comfort without adding bulk to your gear.
Sleeping Pads
Sleeping pads are essential for a good night's sleep and work in tandem with your sleeping bag. They provide insulation from the ground, reducing heat loss, and ensuring you stay warm throughout the night. The R-value of a sleeping pad indicates its insulation capacity, with higher values providing more insulation. When choosing a sleeping pad, consider the expected ground conditions and temperatures. In colder environments, a pad with a higher R-value will be crucial to retain body heat effectively.
When selecting your sleeping bag, consider the accessories that will complement it and enhance your overall comfort. The right combination of accessories will ensure you get a good night's sleep, no matter the conditions. Remember to take into account factors such as temperature ratings, insulation, and the specific activities you'll be engaging in to make informed choices about your sleeping setup.
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