Backpack or bike bag? It's both! The Cycle 20 is the ideal companion for bike commuters who want a secure bag attachment during the ride, but also want to carry the bag as a backpack on the train, bus or on campus. The bag attaches to your gear rack with QMR hooks (e.g. Abus 145/20, not included) that can be locked and can be converted to a backpack in a breeze. Just open the two vertical zips and the entire system can be stowed away in a compartment with Velcro closure. A sewn in, easily removable label explains how to convert the bag in just a few steps. But this smart backpack-bike bag combination offers even more. In the large main compartment there's room for DIN A4 documents, a mesh organizer with zip for small items helps keep things tidy. A separate padded compartment with zip closure accommodates laptops up to 15.6". There's a flat mesh pocket for quick storage of magazines or wet clothes at the front. A helmet holder and reflective elements attractively integrated into the design round off the bag's convenient features. The primary material of the Cycle consists of 50% recycled polyester, the contrast material is 100 % recycled. Our quick-change artist features a PFC-free water-repellent treatment, Eco Finish. The VAUDE Green Shape label stands for environmentally-friendly, functional products made from sustainable materials.