The Lezyne Smart Energy Caddy XL is an innovative top tube bag that doubles as a smartphone holder. The touchscreen compatible phone holder on the top of the bag essentially doubles as a mount for your cycling apps to be visible on your phone throughout your ride. The holder is completely watertight and reinforced to assure the safety of your smartphone. The bag also has 0.5 liters of internal storage, serving as a standard top tube bag. It can be fastened to the tube with a pair of removable straps but also features rivets at the bottom for the option of bolting. This product does not include bolts. With an EVA Foam foundation and an easily accessible zipper, the Lezyne Smart Energy Caddy XL is the perfect storage option for virtually any rider.