How to use: Just put on the jacket like you would with any other outerwear. Zip it up for a snug fit and adjust the hood if you need extra protection from the elements. It's great for casual outings or outdoor activities. Note: Make sure to check the size chart carefully before buying as different suppliers may have different sizing. Also, if you're used to US sizing, remember to adjust when choosing an Asian size. Maintenance: You can machine - wash the jacket in cold water on a gentle cycle. Use a mild detergent and avoid using bleach. Hang it to dry to maintain its shape. If needed, you can iron it on a low - heat setting.