Gina Johnson
Sleeping bags are not supposed to be stored in their compression sacks. This is because the insulation is compressed, and cannot loft properly. While both down and synthetic bag insulations can fluff up after being compressed, there is a limit to their resilience. If a bag is left in a compressed state for several months, it will lose its lofting ability. Synthetics tend to do worse than down in this regard, but both types of fills will be compromised. To store your sleeping bag properly, you should extract it from its stuff sack, dry it thoroughly, and then loosely stow it inside a large breathable cotton or mesh sack.
| Characteristics | Values |
|---|---|
| Storage method | Store loosely in a large breathable cotton or mesh sack |
| Compression | Compressing synthetic sleeping bags for long periods can cause them to lose loft and stay permanently compressed |
| Drying | Dry on a low heat setting, checking frequently to avoid damage from heat or twisting |
| Washing | Wash infrequently, but at least every few years; wash once a season if used regularly |
| Temperature | Avoid storing in areas with temperature extremes, such as damp basements, unheated spaces, or car trunks |
| Reviving | Use hot steam to revive compressed and degraded sleeping bags |
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What You'll Learn
Synthetic bags degrade each time they're stuffed
Sleeping bags, whether they are down or synthetic, should not be stored in their compression sacks. This is because the insulation comes from the air trapped in or around the fibres, and when the bag is compressed, the volume of these air pockets is reduced, which in turn reduces the bag's insulating ability.
Synthetic sleeping bags tend to be worse off than down bags when it comes to compression. Each time a synthetic bag is stuffed into its sack, the fibres degrade or break down a little bit, so they don't spring back as much the next time. This is why synthetic sleeping bags lose a little bit of their insulating power each time they are stuffed into their sack.
However, some synthetic bags claim to be crush-proof, such as Wiggy's SuperLight bag, which has a proprietary synthetic fill called Lamilite that won't break down.
If your synthetic sleeping bag has lost its loft, you can try to restore it by washing it with a product like Nikwax Down Wash and then drying it on low or no heat with a few tennis balls. You can also try tumble-drying it with an old sneaker to break up the fibres and regain some of the lost insulation properties.
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Long-term compression impacts synthetic bags' loft
Storing synthetic sleeping bags in a compressed state over long periods can negatively impact their loft. Sleeping bags are designed to be compressed for short periods, such as during travel or storage, but they should be allowed to loft fully again as soon as possible to maintain their insulating properties and overall longevity.
The synthetic insulation in these sleeping bags is made from various synthetic fibres, often polyester, which are durable and provide decent warmth for campers and hikers. However, the structure of the fibres can be compromised when kept in a compressed state for extended periods. The fibres can become permanently bent or crimped, reducing their ability to loft and trap air effectively.
Loft refers to the fluffiness of the sleeping bag and its ability to trap warm air and insulate the user from the cold ground. A good loft is essential for a warm and comfortable night's sleep outdoors. When synthetic fibres are bent or crimped, the bag loses its ability to loft fully, resulting in reduced warmth. The bag may feel thinner and less fluffy, and it may not provide the same level of You may want to see also Sleeping bags should not be stored in their compression sacks. If left in a compressed state for several months, sleeping bags will lose their lofting ability. This is true for both down and synthetic sleeping bags, but synthetic bags tend to fare worse than down bags. Down sleeping bags are made from the soft, wispy plumage found underneath the exterior feathers of waterfowl, such as geese and ducks. Down bags have an incredibly high warmth-to-weight ratio and are much lighter than synthetic sleeping bags of a comparable temperature rating. They are also more compressible than synthetic insulation. Synthetic sleeping bags, on the other hand, are typically made from polyester that is processed to form very fine fibres that trap air to create a thermal barrier. Synthetic insulation technology has improved in recent years, but it still cannot match the packability of down. Synthetic bags are also heavier and bulkier than down bags. One of the main disadvantages of down bags is that they lose their insulating properties when they become saturated with water. Once down gets wet, it is essentially worthless. Synthetic bags, on the other hand, are more water-resistant and dry faster than down. In terms of storage, down bags should not be stored compressed for extended periods as they will lose their "loft", or insulating properties. Synthetic bags are also susceptible to losing their lofting ability when stored compressed, and may be more prone to damage from heat during drying. You may want to see also Damp synthetic sleeping bags should be dried thoroughly before storing. To dry your sleeping bag, first, fully unzip it. Then hang your bag over a line or on a large hanger in a covered outdoor space for 6 to 8 hours. If there is no outdoor space available, you can hang the bag in a dry, temperature-controlled indoor area. Turning on a fan or dehumidifier will speed up the drying process. You can also use a large commercial dryer, although this is not usually necessary unless you wash your bag. If you do use a dryer, always use a low heat setting and check frequently to avoid damage from heat or twisting. Once your sleeping bag is completely dry, it should be stored uncompressed in a large breathable cotton or mesh sack. This is because the insulation inside a compressed sleeping bag can become damaged over time, losing loft and warmth. This is true for both down and synthetic sleeping bags, although synthetics tend to fare worse. Therefore, it is recommended to store your sleeping bag outside of its compression stuff sack, in a cool, dry place, away from direct sunlight. You may want to see also It is not recommended to store sleeping bags in their compression sacks. Long periods of compression can cause sleeping bags to lose loft and stay permanently compressed. This is because the insulation is compressed and cannot loft properly. If you leave your bag in a compressed state for several months, it will lose its resiliency and lofting ability. Synthetic sleeping bags can be revived with hot steam. Firstly, fully unzip the bag and hang it over a line or on a large hanger in a covered outdoor space for 6 to 8 hours. It is important to avoid direct sunlight, as UV rays can weaken the fabric. Turn the bag inside out for the first 4 hours, and then turn it back for the remaining time. After this, the bag should be washed and dried. Machine wash the sleeping bag on a gentle cycle with warm or cold water and an appropriate soap. Rinse at least twice to ensure all the soap residue is gone. Then, dry the bag on a low heat setting, checking frequently to avoid damage from heat or twisting. Tumble drying on a low setting has the best chance of reviving synthetic bags. However, it is important to note that tumble drying on too high a setting will permanently damage the bag. To avoid this, keep the setting warm but not hot. To aid the revival process, some sources suggest adding a few tennis balls to the tumble dryer. Alternatively, a similar effect can be achieved by adding a damp washcloth and turning the heat to medium. While synthetic sleeping bags can be revived with hot steam, they will never be as warm as they were when new. Additionally, synthetic bags are more susceptible to flattening due to heat and compression than down bags or older, thicker fibre-filled bags. Therefore, it is important to avoid storing synthetic sleeping bags in a compressed state and to follow the revival steps outlined above if the bag has been compressed for a long period. You may want to see also No, it is not recommended to store synthetic sleeping bags in their compression sacks for long periods. This is because the insulation is compressed, and the bag loses its lofting ability. When stored in a compressed state, synthetic sleeping bags lose their lofting ability and their resiliency. This means they will not be able to fluff up and trap air to keep you warm. It is recommended to store your synthetic sleeping bag loosely in a large cotton or mesh sack. This keeps the bag contained without compressing the fill, allowing air circulation. To revive a compressed and degraded synthetic sleeping bag, you can use hot steam. You can use a steam machine to force hot steam through your sleeping bag from one side until the steam comes out the other side. This will help the bag puff up and revitalise it. In the short term, you can store your synthetic sleeping bag in its stuff sack. However, this should not be for longer than a few days to a week.Understanding Sleeper Berth Provision: Rules and Regulations Explained
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