Using these fenders is easy. First, make sure your bike has eyelets as these fenders require them for installation. Then, use the included blacked - out stays and mounting hardware to attach the front fender (960mm long) and the rear fender (1300mm long) to your bike. The flexible mud flaps will help keep mud and dirt off you while riding. As for maintenance, just use a mild soap and water to clean the fenders. Avoid using abrasive cleaners as they can damage the matte black finish. Store the fenders in a dry place when not in use. And always check the mounting hardware regularly to ensure it's tight and secure.