Using these black satin drawstring bags is a breeze. First, open the drawstring to expand the bag. You can place items like jewelry, candies, or small gifts inside. After filling, simply pull the drawstring to close it. When using for a wedding or party, you can tie a nice bow on the drawstring for a more decorative look. As for maintenance, keep these bags in a dry place to prevent the satin from getting damaged. If they get dirty, you can gently wipe them with a soft, damp cloth. Avoid using harsh chemicals as they may damage the satin material. Also, don't expose them to direct sunlight for long periods to prevent color fading.