Using the Ortlieb Velo - Sling is a breeze. If you want to use it as a handlebar bag, simply attach it to the handlebars using the O - straps. Make sure the straps are tightened well so the bag stays in place while you're cycling. To access your items, just open the reinforced roll closure with the magnetic - mechanical fastening. It's quick and easy. When you want to use it as a sling bag, attach the detachable shoulder strap. For volume extension, add the detachable volume extension straps as needed. As for maintenance, keep the bag away from sharp objects to prevent tears in the PU - coated nylon fabric. If it gets dirty, you can use a mild soap and a soft cloth to clean it. After cleaning, let it dry completely before storing it. Also, avoid exposing it to extreme heat or direct sunlight for long periods, as this may damage the coating. And when not in use, store it in a cool, dry place.