Ashwin Lewis
Sleeping bags are an essential part of camping gear, providing warmth and comfort during outdoor adventures. They come in various shapes and sizes, with the most common being rectangular, semi-rectangular or modified mummy, and mummy-shaped bags. The type of sleeping bag you choose depends on factors such as the season, temperature ratings, insulation type, and personal preferences for roominess and weight. When using a sleeping bag, it's important to consider what you wear, as too many clothes can hinder heat exchange. Additionally, proper drying, storage, and maintenance of your sleeping bag can extend its lifespan and improve performance, ensuring many cosy nights outdoors.
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What You'll Learn
Choosing the right bag
There are several factors to consider when choosing the right sleeping bag. Firstly, decide whether you need a backpacking or car camping model. If you plan to be far from motorized transportation, a lightweight backpacking bag might be best. If you're car camping, you can opt for a warmer, roomier bag without worrying about bulk or weight.
Next, determine your budget and warmth requirements. Consider the temperature rating of the bag, which indicates the lowest temperature the bag is designed to keep an "average sleeper" warm. Choose a bag with a lower temperature rating than the lowest temperature you expect to encounter, as you can always unzip the bag if it feels too warm. For winter camping, a bag with a 0°F rating is a good starting point, while summer campers may prefer a 40°F model.
The shape of the sleeping bag also affects its weight and warmth. Mummy-shaped bags are snug and lightweight, while rectangular bags offer more room to move around but are less efficient at retaining heat. If you're camping with a partner, you can opt for double bags designed for two sleepers or rectangular bags that can be zipped together.
Other features to consider include the type of insulation (down vs. synthetic), stash pockets, pad compatibility, and pillow pockets. The weight of the bag will depend on the insulation type, amount of insulation, length, and fabric material. Finally, don't forget to consider the size of the bag, especially if you're taller or broader.
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Preparing for the weather
When preparing to use a sleeping bag, it's important to take the weather conditions into account to ensure a comfortable night's rest. Here are some tips for getting ready for various weather scenarios:
Cold Weather:
To prepare for cold weather, it's crucial to choose a suitable sleeping bag with the right amount of insulation. Look for a bag that is specifically designed for cold winter nights or polar conditions, depending on the expected temperature. Mummy-shaped bags are excellent for cold weather as they have a zip and drawstring to keep the top snug around your body. Additionally, consider using a sleeping bag liner, which can add extra warmth and keep your bag clean. If possible, opt for an insulated pad or air mattress with an R-value suitable for frozen ground. Place the sleeping bag on top of the pad or mattress, as the bag alone won't provide sufficient insulation from the ground.
Before settling in for the night, ensure that you are wearing dry clothes, as moisture can evaporate and lead to heat loss. Cover your head, either with the mummy hood of the sleeping bag or a beanie, to prevent heat loss through your head. Empty your bladder before sleeping, as your body uses energy to maintain the temperature of its contents. Eating a high-carb or high-fat snack before bed can also help fuel your body and generate warmth.
Warm Weather:
When preparing for warm weather, opt for a sleeping bag with a higher comfort temperature rating. You may consider using a lightweight sleeping bag liner by itself if the temperature is too warm for the bag. Choose a tent with good ventilation to allow cool air to circulate. If you expect the temperature to drop significantly at night, set up your tent in a spot that provides a natural windbreak, such as near a stand of trees. This will help create a comfortable sleeping environment without excessive heat.
Regardless of the weather, it's essential to choose the right sleeping bag for the expected conditions and to follow basic heat preservation tips, such as wearing dry clothes, covering your head, and staying hydrated. By preparing for the weather, you can enhance your comfort and enjoyment during your outdoor adventures.
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What to wear
When it comes to what to wear in a sleeping bag, there are a few things to consider. Firstly, it's important to remember that your sleeping bag is designed to contain the heat emitted by your body. Therefore, it's recommended to wear dry clothes, as moisture evaporates and siphons off heat, leading to conductive heat loss.
For your head, it's suggested to use a hat, beanie, or hoodie to retain body heat. If your bag has a mummy hood, utilise it, or bring your own headwear. For your feet, socks are essential, with wool socks being highly recommended. If you're in extremely cold conditions, consider adding a pair of down boots.
For your body, thermals or long underwear are the standard minimum, even for lighter bags. Wool or synthetic long underwear can be a good choice. Some people prefer to sleep in just their underwear or boxers, allowing their body heat to warm up the bag. If you choose to wear clothes, opt for breathable fabrics to allow your core's heat to disperse. You can also add a base layer of lightweight to midweight clothing. However, avoid overdressing, as you want to prevent isolating your core from your extremities, which get cold more easily.
Additionally, consider using a sleeping bag liner. It not only helps keep your bag clean but can also provide extra warmth. A liner can be particularly useful if you're pushing the limits of your bag's performance.
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How to pack it
When packing a sleeping bag, it's important to consider the type of bag you have and the volume of your backpack. Sleeping bags can be made of down or synthetic fill, and the cheaper and warmer the bag, the bulkier it will be.
To pack your sleeping bag, it is recommended to stuff it into a stuff sack rather than folding or rolling it, as this can cause repeated stress on the fabric and make it harder to compress. Start with the foot end of the sleeping bag and stuff it into the sack until it's all in, removing as much air as possible. You can also try flattening the sleeping bag by sweeping your arms across it to remove excess air before you stuff it.
If you are using a backpack, it is recommended to pack the sleeping bag at the bottom, underneath everything else. This will reduce strain on your back and knees, as the bag is lighter in volume than most other supplies. If your backpack has two compartments, store the sleeping bag at the bottom of the top compartment.
If you are concerned about water damage, consider using a waterproof stuff sack or rucksack, or line the interior of your pack with a trash compactor bag. This will keep your sleeping bag dry, especially when setting your backpack on wet ground or crossing streams.
For long-term storage, it is recommended to find a large mesh or fabric storage sack that will protect your sleeping bag without compressing it. This is especially important for down-filled bags, but synthetic insulation also benefits from uncompressed storage.
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Cleaning and maintenance
To keep your sleeping bag in good condition, it's important to clean and maintain it properly. Here are some tips for cleaning and maintaining your sleeping bag:
Cleaning
- It is recommended to clean your sleeping bag at least once a year, or more frequently if used often.
- Spot cleaning is a good first option. Make a paste with non-detergent soap and water, and use a toothbrush to gently clean the dirty areas, especially around the hood and collar where grime tends to accumulate.
- If your sleeping bag is heavily soiled or has lost its fluffiness, it's time for a full wash. You can hand wash it in a bathtub or a large basin, or use a commercial washer and dryer at a laundromat.
- When hand washing, turn the bag inside out and soak it in warm water with the recommended amount of soap. Gently knead the bag to force the water and soap through it. Drain the dirty water, refill with clean water, and knead again to rinse. Repeat this process until the bag is rinsed thoroughly.
- When machine washing, always use a front-loading washer on a gentle cycle. Avoid top-loading washers as they can damage the bag. Select a delicate wash cycle with cold or warm water, and an extra rinse cycle.
- For down sleeping bags, add 2-4 tennis balls to help restore the loft and speed up the drying process.
- Rinse the bag at least twice to ensure all the soap is removed.
- Avoid dry cleaning, as the chemicals can strip the natural oils from the down and affect its loft.
Drying
- Before drying, gently squeeze out excess water from the bag.
- For down sleeping bags, dry in a large, front-loading commercial dryer on medium heat. This may take several hours and multiple cycles. Finish with short intervals on high heat to restore loft, but be careful not to melt the fabric.
- Synthetic bags can be dried in a commercial dryer on low heat. This may also take several hours and multiple cycles.
- Ensure the bag is completely dry before storing. Even a little moisture can cause mildew to grow.
Maintenance
- To reduce the need for frequent washing, use a sleeping bag liner. This acts as a barrier between your skin and the bag, keeping it cleaner.
- Keep your bag off the ground when sleeping outdoors.
- Avoid jumping or standing in the bag, as this can damage it.
- Air out your bag daily during use, and before storing to ensure it's completely dry.
- Store loosely in a large cotton or mesh storage sack, a pillowcase, or sew your own cotton bag. Do not store it compressed in its stuff sack as this will damage the fill over time.
- Store in a cool, dry, well-ventilated area, away from hot attics or humid basements.
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Frequently asked questions
It is recommended to wear one layer of clothing, preferably made from wool, to allow your body and the sleeping bag to exchange heat effectively. You can also fill the empty space around your feet with extra clothes. Additionally, ensure that you zip up the bag all the way to trap the heat inside.
Sleeping bags come in various shapes, including rectangular, semi-rectangular or "modified mummy", and mummy. Rectangular bags offer ample room to stretch out, while mummy bags are more snug to retain warmth and reduce weight. Sleeping bags are also rated by seasons, ranging from 1 season for summer camping to 5 seasons for polar conditions. Choose a bag that suits the season and temperature range you expect to encounter.
Proper drying and storage of your sleeping bag are crucial to prolong its lifespan. If your bag sustains any damage, such as a rip or a broken zipper, consider repairing it instead of discarding it. Some manufacturers offer dedicated wash and repair services to ensure your sleeping bag is maintained correctly.
