Gina Johnson
Down sleeping bags can lose their loft for a variety of reasons, such as being stored in a compression bag for too long, dirt and oil build-up, or even body sweat. The good news is that they are fairly easy to re-fluff and there are several methods you can try. Firstly, give the bag a good shake and lay it out to see if it will re-fluff on its own. If not, you can try tumble drying it on a no-heat or low-heat setting with tennis balls or clean sneakers to help break up clumps. If your bag was stored compressed, it may take longer to re-loft. For dirtier bags, a wash may be in order, but be sure to use a front-loading machine or hand wash to avoid damaging the bag.
| Characteristics | Values |
|---|---|
| What causes a down sleeping bag to lose its loft? | Being stored inside a stuff sack for too long, body sweat, dirt, oil, and medium to high heat |
| How to restore loft | Shake out the bag, lay it on the floor, tumble dry with no or low heat, wash with a down-specific cleaner, add new down |
| Items to aid in restoring loft | Tennis balls, dryer balls, rubber balls, clean sneakers, poker chips |
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What You'll Learn
Shake out the bag and lay it on the floor
Shaking out the bag and laying it on the floor is one of the easiest ways to reloft a down sleeping bag. This method is especially effective if your clean down bag has been stored in a compression bag for several months to a year.
To do this, simply give the bag a good shake to fluff it up, then lay it out on the floor to see if it will re-fluff. This process helps to separate the fill so that the fibres or down inside can trap more air between them, thus restoring loft to your sleeping bag.
If your bag has been stored compressed for a long time, it may take longer to reloft. In this case, you can try manually breaking up any clumps in the down by hand or hanging the bag up and beating it.
After shaking out the bag and laying it on the floor, you can also try tumble drying it with no heat and adding items such as tennis balls, clean sneakers, or poker chips to help restore loft and prevent clumping.
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Dry on low heat with dryer balls
If your down sleeping bag has lost its loft, it may be due to the bag getting dirty or the down clumping up. To restore its loft, dry your bag on low heat with dryer balls. This method is generally safe, but you should still exercise caution as some people have ended up with melted spots on their bags.
Before drying your bag, ensure that you have washed it thoroughly. You can wash your bag by hand in a bathtub or a large sink, or use a front-loading commercial washer on a gentle cycle with cold water. When washing by hand, fill the tub halfway with cool or warm water and add a prescribed cleaner for your down or synthetic bag. Use a sponge or brush to apply soap to the bag and knead it into the fabric. Let it soak for up to an hour, then remove the tub from the sink and wring out any remaining water. Rinse the bag again to ensure that all soap residue is gone. Repeat this process until all soap has been eliminated.
Once your bag is clean, you can begin the drying process. Place your bag in a large dryer, if you have one. If your dryer is too small, your bag may still be balled up, and you will need to take it to a laundromat. Dry your bag on low heat, keeping an eye on the machine's temperature to ensure that it does not get too hot. High heat will destroy your bag's down feathers.
To prevent the down from clumping during the drying process, use dryer balls or clean shoes. These will help to break up any clumps and restore the loft of your bag. If you are using tennis balls, place them in old tube socks, with two balls per sock. This will keep the balls moving and prevent them from getting bogged down in the bag. You can also use a pair of clean sneakers, but avoid using tennis shoes as they may be too heavy and damage the baffles.
It is important to dry your bag thoroughly. If you don't, or if you don't break up the clumps as it dries, the clumps of down will harden, and you will lose loft. Only by rewashing and drying the bag correctly can you restore its loft.
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Wash by hand or machine
If your down sleeping bag has lost its loft, it may be time to give it a good wash. Dirt, oils, and sweat can cause the down to clump together, so washing your bag can help restore its loft.
There are two main ways to wash a down sleeping bag: by hand or by machine. If you decide to wash your bag by hand, you'll need a bathtub or large sink, gentle soap, and warm water. Fill the tub or sink with warm water and add a small amount of gentle soap, such as Ivory Flakes or a specialised down cleaner/reviver like McNett. Avoid using regular laundry detergent, as it can strip the down of its natural oils. Submerge the bag in the water and gently agitate it to loosen any dirt and oils. Drain the dirty water and refill the tub or sink with clean water to rinse the bag. Gently wring out the bag by hand to remove excess water, being careful not to twist or wring the fabric too aggressively.
If hand washing isn't feasible, you can use a large front-loading washing machine, preferably at a laundromat. Avoid using a machine with an agitator in the centre, as these can be rough on the bag and potentially damage it. Use a gentle cycle and a cool or cold setting to prevent shrinkage and minimise wear on the fabric. You can use a specialised down cleaner or a gentle soap for the wash cycle.
After washing, the bag should be dried thoroughly. Some people recommend air drying the bag, while others suggest using a dryer. If you choose to air dry, drape the bag over a clothes rack in a warm, ventilated room, or outdoors. If you decide to use a dryer, it's important to check the manufacturer's recommendations first. Set the dryer to low or no heat to avoid damaging the bag, and add a few dryer balls, tennis balls, or clean sneakers to help knock the down clumps around and restore loft.
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Dry with no heat
If your sleeping bag has been stored away for a long time, it may have lost its loft. The first step is to ensure that your bag is clean and dry. If your bag is dirty, spot cleaning is the best method to avoid unnecessary wear and tear. Once your bag is clean and dry, you can try the following methods to reloft it without heat:
Shake it out
Take your sleeping bag out of its stuff sack and shake it vigorously. You can then spread it out and leave it for a few days to see if it relofts.
Place your sleeping bag in a large commercial dryer on air (no heat) with a couple of tennis balls or clean sneakers. The tennis balls or sneakers will help to break up any clumps of down and restore the loft. You can also use something like poker chips or a heavy plastic bottle.
Avoid compression
Avoid keeping your bag compressed for an extended period. Use a waterproof stuff sack when backpacking, especially if you carry the bag outside your pack. Alternatively, line a regular stuff sack with a plastic garbage bag and then stuff the sleeping bag inside.
Avoid dry cleaning
Do not dry clean your sleeping bag. The solvents used in dry cleaning can strip the natural oils from the down that help it retain loft.
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Send to a specialist company
If all your attempts to reloft your down sleeping bag have failed, you can consider sending it to a specialist company.
Specialist companies, such as Rainy Pass Repair, can wash your sleeping bag, add new down if it's a bit lacking, or completely replace it if it is beyond repair. This is a great option if you don't want to part with your beloved bag. Washing a down sleeping bag is a delicate job, as you can easily tear the fabric if you're not careful. Therefore, it is recommended to send it to a specialist company that has the necessary equipment and expertise to handle the cleaning process effectively.
Before sending your bag, it is important to check the manufacturer's recommendations and care instructions. Some bags may have specific care requirements that a specialist company can better accommodate. Additionally, if your bag is still under warranty, sending it to a specialist company recommended by the manufacturer can help ensure that you don't void the warranty.
When choosing a specialist company, look for one with experience in handling down sleeping bags. They should have knowledge about the different types of down and the appropriate cleaning methods. It is also beneficial to choose a company that offers additional services, such as repairing or replacing damaged components.
Some companies even offer restoration services, where they can add new down filling to your bag if it has lost some of its loft. This can be a more cost-effective option than purchasing a new bag, especially if your bag is still in good condition aside from the loft issue.
By sending your down sleeping bag to a specialist company, you can rest assured that your bag will be handled with care and expertise, increasing the chances of successfully restoring its loft.
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Frequently asked questions
First, give your bag a good shake and lay it on the floor to see if it will re-fluff. If it doesn't, wash your bag with a down-specific cleaner or a gentle soap. Then, dry it in a tumble dryer on a no-heat setting with a couple of tennis balls or rubber balls to keep the down from lumping.
There are several reasons why your sleeping bag may have lost its loft. One of the most common reasons is that it has been stored in a compression bag for too long. Other reasons include dirt, body oils, and sweat, which can cause the down to clump together.
To prevent your down sleeping bag from losing its loft, make sure to keep it clean and dry, and avoid storing it in a compression bag for extended periods. It is also recommended to wash your bag with a down-specific cleaner or a gentle soap periodically to remove any dirt and oils that may build up over time.
