1. Clothes and hats made of woolen are easy to shrink and deform during washing, so they must be sent to a professional dry cleaner for thorough cleaning.

2. If there are stains, please wipe them with a wet towel in time. Because the longer a stain stays on clothing, the easier it is to soak into the fibers and the harder it is to clean.

3. If it is not too dirty, you can soak a thick towel and wring it out, then put it on the hat and tap it lightly with a thin stick, you will see that the towel turns black , the dirt on the hat was transferred to the towel.