The Ortlieb Messenger-Bag is a slim, functional city bag popular with couriers and others who frequently cycle. It is made from water-resistant material and has a roll-top closure that adjusts to the height of the load. The ventilated foam base, waist belt and chest strap help the bag fit comfortably against the body. Reflective strips and side reflectors improve visibility on the road, especially in darkness and poor weather. Models from 2023 onward can be fitted with an optional laptop compartment, sold separately, which protects the laptop on uneven roads.