
A wet down sleeping bag is a sorry sight, and it won't keep you warm. If the fill of your sleeping bag gets wet, give it plenty of time to dry before storing it. If you have access to a large dryer, use that for drying the bag. If your dryer is too small, you'll need to transport your wet bag to the laundromat. If you choose not to use a dryer, lay the bag flat on a clean surface outside in the sun or partial shade. You may need to manually break up clumps of insulation as your bag dries. Make sure your bag is completely dry before storing it, otherwise, you'll end up with mildew inside the filling.
| Characteristics | Values |
|---|---|
| Drying techniques | Tumble drying, air drying, using a dryer |
| Air drying precautions | Avoid direct sunlight, lay flat, hang up |
| Tumble drying precautions | Use low heat, use dryer balls or tennis balls to prevent clumping |
| Soap | Use down soap or a soap specifically formulated for down sleeping bags, avoid conventional laundry detergents |
| Washing techniques | Use a front-loading washer, wash gently, rinse thoroughly, use special down wash |
| Washing precautions | Do not wring or squeeze the bag, do not use a top-loading machine, zip up all zippers before washing |
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What You'll Learn

Use a tumble dryer on low heat
If your down sleeping bag is wet, it's important to dry it out thoroughly before storing it. One way to do this is by using a tumble dryer on low heat. Here's how to do it:
Firstly, if your sleeping bag is soaked, consider air-drying it first for several hours or even days until it's fairly dry. During this time, ensure that you support the bag from beneath when moving it, as the weight of the wet down can put strain on the seams and cause them to rip. You can also turn the bag inside out to help dry out any moisture.
Once your bag is mostly dry, or if it's only slightly damp, you can put it in the tumble dryer. Make sure the dryer is set to a low heat setting, as high heat can damage the bag. The tumbling action of the dryer will help to break up any clumps of down and restore the loft.
To further aid in the process, you can add two or three clean tennis balls or lightweight, clean sneakers to the dryer. These will help to fluff up the down and ensure it doesn't clump together. If you don't have tennis balls or sneakers, you can use thick rolled-up socks or laundry balls.
Run the dryer for at least an hour, or longer if needed, until the bag is completely dry. Down bags can take several hours to dry, so be patient and check on the bag periodically. Remember to check that the seams, zippers, and drawcords are in good shape after drying.
Finally, before storing your sleeping bag, ensure that the insulation is evenly distributed and that there are no clumps. You can leave the bag out all night on a bed or hang it up to be sure that it's completely dry.
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Air it out for several hours
If your down sleeping bag is wet, it won't keep you warm. Therefore, it is important to air it out for several hours to ensure it is completely dry before storing it.
Firstly, find a suitable location to air your sleeping bag. Look for an area with low humidity and no direct sunlight. You can lay the bag flat on a clean surface, such as grass or a beach towel, or hang it up. If you choose to lay it flat, make sure to turn the bag inside out to dry out any moisture. Do not leave the bag in direct sunlight for too long, as UV light can slowly degrade the fabric.
Depending on the climate and humidity, you may need to air your sleeping bag for several hours or even a couple of days. Be patient and give it plenty of time to dry before storing it. It is essential to ensure that your sleeping bag is completely dry to prevent the growth of mildew, which can cause a persistent unpleasant smell.
While your sleeping bag is drying, you may need to manually break up clumps of insulation. This can be done by gently fluffing the bag or using your hands to separate the clumps. If you have access to a dryer and clean tennis balls or thick rolled-up socks, you can put them in the dryer with the sleeping bag to help break up the clumps and speed up the drying process.
Once your sleeping bag is completely dry, you can store it loosely in a large cotton or mesh storage sack. Avoid storing your bag in a stuff sack or waterproof bag, as this can damage the fill over time. Additionally, do not store your sleeping bag in a watertight container, as this can trap moisture and lead to mildew growth.
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$164.97 $178.72

Wash with a specialist product
If your down sleeping bag is wet, it won't keep you warm. You should always try to keep your bag dry and protected when camping. If your bag does get wet, it's important to give it plenty of time to dry before storing it away.
If you want to wash your down sleeping bag with a specialist product, you can do so by hand or in a machine. First, check the label on your bag for any specific instructions. Then, fill a tub with cool or warm water and add the specialist cleaner. Avoid using too much soap, as it will be hard to rinse out.
Lay the bag in the water and gently work the soap throughout, paying particular attention to heavily soiled areas. Allow the bag to soak for up to an hour, then drain the water and gently press out any remaining liquid. Refill the tub with clean water to rinse, then work the soap out gently and let the bag sit for 15 minutes before draining again. Repeat the rinsing process until all the soap is removed, then gently squeeze out as much water as you can.
If you're using a machine, choose a gentle cycle with warm or cold water, and use as little soap as possible to avoid over-sudsing. Add a couple of damp items like towels or t-shirts to help balance the spin of the machine. Support the entire bag when removing it from the washer, then gently squeeze out the excess water.
Specialist soaps designed for down sleeping bags include Grangers Down Wash, Gear Aid ReviveX Down Wash, and Nikwax Down Wash. These soaps avoid harsh chemicals that can strip the natural oils from the down.
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Avoid direct sunlight
If your sleeping bag is wet, it is important to dry it out thoroughly before storing it away. Sleeping bags should be dried in an area with low humidity and no direct sunlight.
Direct sunlight should be avoided as UV light can slowly degrade the fabric of your sleeping bag. If your bag is down, it is particularly important to avoid direct sunlight when drying, as the internal baffling could become damaged. If you have no choice but to dry your sleeping bag in the sun, make sure it is not soaking wet, as this will make the bag very heavy and could cause damage.
There are a few different methods for drying your sleeping bag without the use of direct sunlight. You can tumble dry your sleeping bag, but this should be done on a low-heat setting and for several hours. To speed up the process, add two or three tennis balls to the dryer to break up any clumps of insulation. If you don't have access to a tumble dryer, you can air dry your sleeping bag by laying it flat on a clean surface in a low-humidity environment. You can also hang your sleeping bag up to dry, but be careful to distribute the weight so that you don't put too much stress on the nylon fabric.
Once your sleeping bag is completely dry, it is important to store it loosely in a large cotton or mesh sack. This will ensure that the insulation doesn't get crushed and your sleeping bag will maintain its loft, keeping you warm on future adventures.
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Dry in a laundry sack
If you want to dry your sleeping bag in a laundry sack, you'll first need to wash it. It's recommended to wash your sleeping bag at least once a year, at a minimum. If you're using your bag more frequently, you may want to wash it more often.
To wash your sleeping bag, start by checking the manufacturer's instructions. Many sleeping bags can be machine washed, as long as a front-loading washer (or top-loading machine without an agitator) is used. If you're handwashing, fill your tub with cool or warm water and add a soap specifically formulated for down sleeping bags, such as Grangers Down Wash. Avoid using conventional laundry detergents as these can strip the oils from the down and prevent it from lofting properly.
Once you've washed your sleeping bag, gently squeeze out as much water as you can. Then, carefully put the sleeping bag in a large laundry sack. Put the laundry sack containing the sleeping bag in the dryer and set it to low heat or 'delicates'. If you're using a laundromat dryer, remember that their thermostats may be imprecise, so use a cooler cycle.
If you're drying a down bag, put a couple of clean tennis balls into the drum with the sleeping bag. The tennis balls will help to break up clumps of down. If your dryer is small and the bag stays balled up, you may need to transport your wet bag to a laundromat with larger machines.
After drying, remove the sleeping bag from the laundry sack and turn the sleeping bag inside out. Return the bag to the laundry sack and put it back in the dryer for a final cycle.
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Frequently asked questions
There are several methods to dry a wet down sleeping bag. You can use a tumble dryer on a low heat setting, and add tennis balls to break up clumps. Alternatively, you can air-dry the bag by laying it flat on a clean surface outside, or hanging it up.
If using a tumble dryer, a down sleeping bag will take several hours to dry. If air-drying, it could take a couple of days.
It is important to be sure that your sleeping bag is completely dry before storing it away. You can hang it up for a few days to ensure that any remaining moisture is gone.
Make sure your sleeping bag is thoroughly dried before storing it. If the bag is not completely dry, it may develop mildew, which will be very difficult to get rid of.











































