Backpack or bike bag•Both! It is the ideal companion for commuters who want the bag to sit securely on their bike while they are riding, but then want to carry it as a backpack on the train, bus or at university. The bag is attached to the luggage rack using the lockable QMR hooks (e.g. Abus 145/20, not included) and can be converted into a backpack in no time at all. To do this, the two vertical zips are opened and the entire fastening system is stowed in a compartment closed with Velcro. But the clever backpack-bike bag combination offers even more. The large main compartment has space for A4 documents, a water bottle and a snack, as well as a change of clothes. A separate, padded compartment closed with a zip can hold laptops up to 15.6•. A compartment that extends across the entire front opens diagonally and offers a mesh organizer for cell phone, keys and wallet. This compartment also has a flat mesh pocket for quickly stowing magazines or wet clothes. Two side compression straps, a helmet holder and the rain cover included in delivery round off the comfort features. The main material of the Cycle 28 Luminum is made of 50% recycled polyester, the contrast material is even 100% recycled. This product is climate neutral: the emissions from materials, manufacturing process and shipping were holistically determined and systematically reduced. Currently unavoidable emissions have been fully offset by the independent non-profit organization ?myclimate•.