Converting bike top tube bag to shoulder bag Works with the proprietary magnetic locking module Quick and easy installation Waterproof zipper protection Bike top tube bag made to be convertible to shoulder bag With the proprietary magnetic locking module system combining German-engineered FIDLOCK® magnetic hardware Made for easy and quick installation no tools required Ideally designed for bike commuters or mountain bikers, fits virtually all bikes Made of durable premium ripstop Nylon with waterproof zippers Detachable shoulder strap converting top tube bag to shoulder bag The proprietary magnetic locking module is designed to be fastened by a set of anti-slip hook-and-look straps onto the bike top and down tubes Product consists of 2 top tube bags. The bags are made to be attached to each other via the magnetic locking parts and the YKK® webbing clip converting the twin bags to a double-storage shoulder bag.