Using your Restrap pannier bags is easy. First, decide whether you want to attach them to the front or rear rack of your bike. Then, use the side - release buckles and the adjustable hook system to secure the bags onto the 10 - 16mm rails. For the large bag, if you have a laptop, you can clip it into the dedicated sleeve. When riding, especially at night or in bad weather, the reflective details on the bags will help others see you better. As for maintenance, since the bags are made of waterproof materials, you can simply wipe them clean with a damp cloth if they get dirty. Avoid using harsh chemicals as they may damage the materials. And always store the bags in a dry place when not in use to keep them in good condition.