How to Wash a Sleeping Bag at a Laundromat

Sleeping bags need washing after every 20-30 uses (or once per camping season), but most home machines are too small to handle them. A laundromat's large front-load machines are ideal. Here's how to wash a sleeping bag at a laundromat without damaging the insulation.

Step-by-Step

1. Check the care label. Most sleeping bags are machine washable. Our symbols guide can help.
2. Close all zippers and loosen drawstrings. Open zippers snag and damage fabric.
3. Use a large front-load machine (40+ lb capacity). Never use a top-loader — the agitator can tear the baffles and damage insulation.
4. Cold water, gentle cycle. Hot water damages both down and synthetic fill.
5. Use appropriate soap: Down-specific wash (Nikwax Down Wash) for down bags, mild liquid detergent for synthetic. Never use regular powder detergent — it clumps in the fill.
6. Run an extra rinse. Sleeping bags are thick and trap soap. Residue reduces insulation effectiveness.

Drying a Sleeping Bag

• Use a large commercial dryer on LOW heat. High heat melts synthetic fill and damages down.
• Add 3-4 clean tennis balls or dryer balls. These break up clumps in the insulation and restore loft — essential for down bags.
• Expect 2-3 full dryer cycles (60-90 minutes total). Sleeping bags take a long time to dry completely.
• Check for dampness. Feel inside the bag, especially in corners and foot box. Any remaining moisture will cause mildew.

Cost: $6-$10 for the wash + $4-$7 for drying = about $10-$17 total. See pricing guide. Find a laundromat with large machines.