For polyester down jackets, one should avoid alkaline substances, second, avoid stirring with a washing machine or rubbing with hands, third avoid twisting, and fourth avoid baking with open flames. The correct maintenance method of down jacket is:

　　(1) If the down jacket is not too dirty, dry cleaning can be used. Dip a towel with gasoline on the neckline, cuffs, front placket, etc., and wipe quietly. After the oil is removed, wipe the gasoline-stained area with a dry towel. You can wear it after the gasoline evaporates and cleans.

　　(2) If the down jacket is too dirty, just use the whole washing method. Soak the down jacket in cold water for 20 minutes. Pour about 2 tablespoons of washing powder into clean water with a water temperature of 20-30℃ and stir well. Then put it into the down jacket removed from the clean water and squeeze the water from the automatic down filling machine, and soak for 5-10 minutes. Take the down and down from the washing liquid, spread it flat on a clean table, and use a soft brush dipped in the washing liquid to gently rinse from the inside out. After rinsing, put the clothes in the washing liquid for a few times, then rinse them in warm water at 30°C for 2 times, then rinse them in clean water 3 times to completely remove the detergent residue. Wrap the rinsed down in a dry bath towel and quietly absorb the moisture, then dry it in the sun or a ventilated place. After drying, use a small stick to quietly tap the surface of the clothes to restore the original looseness and softness of the down jacket.

　　Maintenance methods for down jackets of various fabrics:

　　1. Maintenance of down jackets made of leather fabrics: Leather etc. should not be worn on rainy or snowy days. The exposure should usually be between 9 and 10 in the morning and 3 to 4 in the afternoon. Exposure is not allowed, otherwise the leather will age. It is better to preserve it by hanging. And add mothballs wrapped in paper. To add its softness, lightly apply a layer of glycerin on its surface. Or a special preparation for leather clothing. Expose to the sun before wearing.

　　2. Maintenance of down jackets made of woolen fabrics: Wash woolen garments before storage. Dry cleaning, ironing, and drying (must be adequately dry) are the best way to store them in the future. Store in a ventilated, cool and dry place. High-grade woolen cloth is best hung in the wardrobe to avoid deformation due to its own weight. Put mothballs in the wardrobe and pockets of clothes to prevent insects when storing.

　　3. Maintenance of down jackets made of cotton and linen fabrics: This type of clothing must be protected from moisture and mildew. Wash and dry winter down jackets before storage. It is divided into dark and light colors and stored separately to avoid dyeing each other. Clothes that are not often worn by the down filling machine should be exposed to mildew in summer. The clothes life will be shortened, and the skin will be uncomfortable the next time you wear it.

　　4. Maintenance of down jackets of other fabrics: Others are relatively simple. After all, no matter what kind of clothing should be cleaned and stored dry. The storage time depends on the layout of the clothing and the nature of its fabric.