The MotoCentric Tower GPS Tank Bag is arguably the most versatile motorcycle tank bag available on the market; you are really buying three separate tank bags in one. By purchasing this bag, you will never feel like you should have purchased a larger or smaller bag as you are able to use this bag to fit the type of ride you are planning. An easy to use zippered attachment on the base of the bag allows you to either attach both bags at the same time or just one of the them. One of the bags comes GPS-ready and the other comes iPad / map ready so you will never be without instructions or navigation for your trip. It is also stocked with essential features such as heavy-duty zippers, Reflect-A-Light reflective piping and numerous outside pockets to store smaller items. One of the bags is expandable and both bags can become a backpack. The tank bag is made from heavy-duty high-quality Maxtura ballistic fabric and comes with a lifetime warranty. The Tower GPS Tank bag is really the perfect motorcycle tank bag for riders that want 3 different tank bags in one.