JetBlack JetPack Top Tube Bag 1.7L Black is a compact, weatherproof top tube bag built for city commutes and weekend adventures. With 1.7 litres of flexible storage, you can keep essentials secure and organised thanks to adjustable compartments, external mesh pockets, and a waterproof zipper. Its lightweight, durable design features soft-touch attachment points for quick, secure mounting and easy integration with other JetPack bags to suit any ride.