Using this top tube bag is a breeze. First, adjust the mounting system to fit your bike's top tube. You can easily attach the bag to the tube using the hook and loop attachment. Once it's on, you can put your phone, wallet, tools, and other items inside. When you want to use your phone, you don't have to take it out because the bag is touchscreen - friendly. As for maintenance, keep the bag clean by wiping it with a damp cloth when it gets dirty. Avoid using harsh chemicals as they might damage the material. When not in use, store it in a dry place. Make sure to check the hook and loop attachment regularly to ensure it's still strong and can hold the bag securely on your bike.