Answer: We suggest using an appropriate cleaner for your down or synthetic bag and avoiding using too much soap. Clean the sleeping bag by filling a bathtub with water and cleaner, laying the bag in the water, and stroking the soap all over. Rub together the most heavily soiled areas and allow them to soak for up to one hour. Drain the tub and press out any remaining water. Fill the tub with cool or warm water again to rinse, work the soap out gently, let the bag sit for 15 minutes, and drain. Press out any remaining moisture. Repeat the rinse process until all the soap is out. Gently squeeze out as much water as you can from the bag. Then, work for your hands underneath and gather it all up in a ball in your arms to carry it to a dryer or outside for air drying. Dry the bag in a large dryer if available. If your dryer is small and the bag stays balled up, you'll need to take your wet bag to a laundromat. If you choose not to use a dryer, lay the pack flat on a clean surface outside, such as grass or a beach towel, in the sun or in partial shade.