Using this top tube bag is a breeze. First, decide how you want to attach it. If your bike has mounting points, use the bolts to secure the bag firmly. If not, wrap the velcro straps around the top tube. Make sure it's tightly attached to prevent it from moving while you're cycling. When you're riding, you can easily open the one - hand - operable zip to grab your snacks, phone, or other items. Just be careful not to open it too wide while cycling to avoid things falling out. To keep your bag in good condition, wipe it down with a damp cloth after each ride to remove dirt and grime. If it gets really dirty, you can use a mild soap. Avoid using harsh chemicals as they may damage the waterproof coating. Store the bag in a dry place when not in use to prevent mold and mildew.