Using the GEOSMINA Harness Roll Bag is a breeze. First, adjust the flexible harness according to your needs. You can use it to carry the included roll bag or other outdoor items like sleeping bags and tents. The large fastening straps ensure everything stays in place. To attach the bag to your handlebars, use the interchangeable high - density foam pads for a snug fit. When it comes to closure, simply roll up the bag's opening to keep water out. As for maintenance, make sure to clean the bag and harness with mild soap and water after use, especially if they've been exposed to dirt or moisture. Store the product in a dry place when not in use. Avoid using sharp objects near the bag to prevent tears. If you add the GEOSMINA Small Handlebar Bag, follow the same cleaning and storage instructions for it too.