Backpack with roll closure and Quick-Lock mounting system; can be used as a bike bag or backpack; PU-coated fabric with incorporated reflective thread; quick, intuitive conversion between functions using a reversible front pocket; outside pocket integrated in the flap (not waterproof!); side mesh pocket; inside pocket with laptop compartment; handle; chest strap; reflectors; Quick-Lock2.1 system for racks with a tube diameter of up to 16mm.