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How to Wash a Sleeping Bag: Step-by-Step Care Guide for Outdoor Enthusiasts

Find out how to wash a sleeping bag with our informative guide, which includes tips on properly spot cleaning and caring for your sleeping bag to keep it in top shape.

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Washing your sleeping bag isn’t just about keeping it free of dirt and odors; it’s crucial to maintaining its insulation, comfort, and longevity. Whether down, synthetic, or hybrid, each type of sleeping bag requires specific cleaning to avoid damaging those critical insulating fibers.

Before washing your sleeping bag, it’s essential to understand the proper machine and hand washing techniques.

Key Takeaways

  • Regular cleaning maintains insulation and prolongs the life of your sleeping bag.
  • Different types of sleeping bags require different cleaning methods to prevent damage.
  • Proper sleeping bag maintenance includes preparing, washing, rinsing, drying, and storing.

When to Wash a Sleeping Bag

Frequency of Use

  • Regular Use: If you camp frequently or live in your tent, consider washing your sleeping bag monthly to annually to maintain its insulation and cleanliness.
  • Occasional Use: For those sporadic trips, washing as needed should suffice.

As Needed Signs to Wash 

  • It has visible dirt and stains.
  • Unpleasant odors linger even after airing it out.
  • The insulating material, or loft, seems less fluffy, affecting warmth.

Remember, washing it too often can do more harm than good by damaging the insulation and fabric. Spot cleaning and airing out are your best bet for light dirt and smells.

Tips to Reduce Need to Wash

  • Consider using a sleeping bag liner, a protective barrier that keeps the bag cleaner.
  • Air out your bag daily during a camping trip and after each trip before properly storing it
  • Keep it off the ground and sleep on a mat or ground cloth. 
  • Sleep in clean clothes. 
  • Spot cleaning can reduce the need for full washes.

How to Machine Wash a Sleeping Bag

Photo: ©Mykola Pokhodzhay via Canva.com

Choosing the Right Machine and Settings

  • Machine: Opt for a front-loading washer without a central agitator, as these are gentler on your sleeping bag. If your home machine isn’t suitable, visit a local laundromat.
  • Detergent: If you have a down sleeping bag, use a cleaner like Nikwax or a gentle, non-detergent soap for synthetics. Avoid harsh chemicals like bleach or fabric softener, which can damage fibers.
  • Temperature and Cycle: Cold or warm water on a gentle cycle will treat your sleeping bag right, preserving its materials and loft.
  • Manufacturer Guidelines: Follow any particular manufacturer guidelines for your specific sleeping bag. 

Step-By-Step Machine Washing

  1. Preparation: Make sure to zip up your sleeping bag and turn it inside out.
  2. Protection: Place it in a large mesh laundry bag or pillowcase to avoid snags.
  3. Loading: Situate the bag loosely in the machine, adding the correct amount of specified soap.
  4. Washing: Start with a gentle wash cycle and an additional rinse cycle to clear any soap hanging around.
  5. Drying: Gently squeeze—not wring!—out the water and either spread your sleeping bag on a flat surface or dry it on low heat with dryer balls or clean tennis balls to prevent clumps.

How to Hand Wash a Sleeping Bag

Photo: ©joey333 via Canva.com

Hand washing your sleeping bag at home effectively keeps it clean without exposing it to the harsh churning of a machine washer. You’ll have more control over the wash, which reduces the risk of damaging your gear. 

Setup for the Hand Washing Process

  • Tub Selection: Grab a large, clean bathtub, plastic tub, or sink that comfortably fits your sleeping bag.
  • Water: Fill your chosen basin with lukewarm water. Extreme temperatures can harm the fabric and filling.
  • Soap: Opt for a gentle, non-detergent soap or a specialized cleaner like Nikwax Down Wash, particularly if your sleeping bag is down.

Step-by-Step Handwashing

  1. Prepare your sleeping bag by zipping it up and turning it inside out.
  2. Fill the tub with enough lukewarm water to cover the bag, then mix in the soap.
  3. Submerge the sleeping bag. Gently agitate and knead it to distribute the soap and cleanse thoroughly.
  4. Allow the bag to soak for 15 to 30 minutes, depending on its condition.
  5. Drain the soapy water and refill the tub with clean water to rinse.
  6. Gently squeeze and lift the bag, repeating the rinsing process until the water clears. The aim is to remove all soap residue.
  7. Squeeze out the excess water carefully without wringing the fabric. Move your bag to a suitable drying area.

How to Dry a Sleeping Bag

AI Photo: Daniel Borkert/Canva Magic Media™

It’s not just about drying it; it’s about preserving the integrity of the insulation, whether down or synthetic.

Dying Tips

  • Pick the Right Dryer: Use a commercial-size dryer with ample room or air-dry if you have the space. Your regular clothes dryer might be too small and damage the bag.
  • Temperature Settings: Always opt for low heat or no heat at all. High heat can damage the fibers and decrease the bag’s insulating properties.
  • Fluffing the Insulation: Add tennis balls or dryer balls to the dryer. These help break up clumps of insulation, facilitating even drying.

Step-by-Step Drying

Dryer Method

  1. Place your sleeping bag in a commercial dryer at the laundromat.
  2. Set it to low heat or air cycle.
  3. Check periodically, loosening any clumps of down or synthetic material.
  4. The process may take a few hours—patience is key.


  1. Lay the sleeping bag flat on a drying rack or clean area.
  2. Turn it over occasionally for even drying.
  3. Expect air-drying to take longer, even up to a couple of days.

When your sleeping bag is finally dry, shake it out, fluff it up for loft restoration, and store it uncompressed to maintain the insulation’s loft.

How to Spot Clean a Sleeping Bag

AI Photo: Daniel Borkert/Canva Magic Media™

Spot Cleaning Supplies

  • A soft brush, damp cloth, or sponge
  • Mild, non-detergent soap or sleeping bag-specific cleaner
  • Cold or warm water
  • Needle and thread for repairs
  • Cleaning solvent for tougher stains

General Spot Cleaning

  • Surface Dust: Gently brush off with your soft brush.
  • Mud: Dab with your damp cloth; there is no need to rub it in.
  • Heavily Soiled Areas: Apply a dab of your cleaning solvent to a cloth and tap it onto the problematic patch.

Spot Cleaning Stains 

  • Food & Sweat: Mixing warm water and dish soap will do. Just a dab, a rub, then rinse.
  • Blood: Cold water, with a touch of hydrogen peroxide, is your best bet.
  • Oil & Grease: Warm water and a sprinkle of baking soda can work wonders.
  • Mold & Mildew: Warm water with vinegar can help.

Apply your chosen solution directly to the stain and gently rub it with your cloth or sponge. Rinse meticulously with clean water and blot; don’t rub. Dry with a towel and air-dry. If you’re in a pinch, a low-setting hair dryer can help.

A little TLC can go a long way toward keeping your sleeping bag in good shape season after season. After cleaning it, remember to store it properly. Please share your sleeping bag cleaning tips in the comments.  


How do I know what type of sleeping bag I have?

To identify your sleeping bag type, check the tag or label for the fill material. If it lists down feathers, you’ve got a down sleeping bag. Synthetic fill list materials like polyester. Knowing the type is critical to proper care.

Can I wash my sleeping bag with other items?

Washing your sleeping bag alone is best to prevent damage from other items and ensure a thorough cleaning. Overloading can reduce cleaning effectiveness and may damage the bag’s material.

What type of detergent is best for washing down sleeping bags?

Select a gentle, non-detergent soap specially formulated for down products such as Nikwax Down Wash or Grangers Down Wash. Regular detergents can strip down feathers of their natural oils, reducing loft and warmth.

Is dry cleaning a safe option for sleeping bags?

Generally, avoid dry cleaning your sleeping bag. The chemicals used can degrade the insulating properties. Always follow the care label for cleaning instructions to be safe.

Are there professional services available to wash sleeping bags?

Yes, professional cleaning services exist that specialize in outdoor gear. They have the proper equipment and expertise to safely clean and rejuvenate your sleeping bag without the risk of damage. I haven’t used them, and I’m not affiliated with them, but Rainy Pass looks like a good professional sleeping bag laundry provider.

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Daniel Borkert is the founder and editor-in-chief of Outdoor Footprints, a website that tells you everything you need to know about camping and hiking. He is an avid outdoorsman with almost four decades of experience in hiking, camping, caving, and fishing. Daniel loves to involve his wife and kids in his outdoor pursuits and inspire other families to do the same. He lives in Seattle, Washington with his family and an energetic Boston Terrier named Zion.

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