Using this Evoc top tube bag is a breeze. Simply open the water - resistant YKK zipper and place your items inside. The top - load design allows for easy and quick access, so you can grab what you need on the go. You can use the additional mesh pockets to keep small items like keys or energy gels organized. The nutrition compartment is perfect for storing energy bars. When it comes to maintenance, a gentle wipe with a damp cloth is enough to keep it clean. Just make sure to dry it thoroughly before storing. Also, be careful when attaching it to your bike to avoid scratching the frame, and use the included frame protection stickers. This bag is lightweight, so don't overload it to maintain its functionality and prevent any strain on your bike's top tube.