Using this jacket is easy. Just slip it on like any other pullover. It's great for casual outings or everyday wear. When it comes to sizing, remember the Asian sizing difference. If you're between sizes, go for the larger one to ensure a comfortable fit. Before you buy, double - check the size chart. If you're still not sure, our customer service team is here to help. As for maintenance, you can machine - wash it in cold water on a gentle cycle. Use a mild detergent. Avoid using bleach as it may damage the cotton fabric. After washing, tumble dry on low heat or hang it to dry. This will help keep the jacket in good condition for a long time.