Using these panniers is easy. First, attach them to your bike's rack using the QL2.1 system. Make sure they're securely fastened before you start your ride. When packing, distribute the weight evenly in both panniers to keep your bike balanced. As for maintenance, clean them with a mild soap and water after getting dirty. Avoid using harsh chemicals that could damage the polyester fabric. Also, store them in a dry place when not in use to prevent mold. Keep an eye on the mounting system and replace any worn - out parts if needed to ensure continued safety and stability.