Choose this Flat Tank Mounting Harness to use a waterproof and dust-proof Small, Medium, or Large Rolie bag like a tank bag.  This mount is designed to fit almost any flat tank bike, large or small. It is modeled after the mounting systems for our regular flat-tank Tank Bags. A stable four-point mount with easy on/off side release buckles add to the versatility of any Rolie Bag. (Rolie Bag sold separately)  Learn more about using this Flat Tank Mounting Harness with a Small Rolie Bag, or a Medium or Large Rolie Bag.  Explore more possibilities in The Rolie Guide  Kit contains: Flat Tank Mount Universal Mounting Harness Mounting Instructions and Hints.