To use this jacket, simply zip it up and wear it over your other clothes for warmth and style. It's great for casual outings during the winter. When choosing a size, always refer to the size chart as different brands have different sizing. As for maintenance, you can machine - wash it in cold water on a gentle cycle. Use a mild detergent and avoid bleach. Hang it to dry to keep its shape. If there are any stains on the embroidery, try spot - cleaning gently. Also, store it in a cool, dry place when not in use to prevent any damage.