Using this belt bag is super easy. Just zip it up and adjust the belt to fit your waist. You can put your keys on the loop inside, and use the card slip pockets for cards. The exterior zip pocket is great for quick - access items like your phone or a lip balm. When it comes to maintenance, use a soft, damp cloth to clean it. Avoid using harsh chemicals as they might damage the material. Also, don't overstuff the bag to keep its shape. And make sure to keep it in a dry place when not in use.