Using this Evoc top tube pack is easy. Just attach it securely to your bike's top tube. You can put small items like keys, snacks, or a repair kit inside. When you're riding, you can easily access the pack without much effort. As for maintenance, if it gets dirty, you can wipe it down with a damp cloth. Keep it in a dry place when not in use to maintain its water - repellent feature. Also, make sure not to overfill it as it may affect its attachment on the bike.