It is best not to use a washing machine to wash down jackets. Soak in washing powder and softener (such as blue moon) for 20 minutes, then brush it with a soft brush, then press it with clear water and clean it. Finally, put it into a net bag or gauze bag, put it into a dryer to dry, and finally take it out to dry, which takes about a week; Finally, when it is dry, you can pat it on both sides with your hands and loosen the velvet racket!