The Seat-Pack 16.5L from Ortlieb is a saddle bag for bikepacking. Bikepacking means that you pack a bike, put your luggage on it and set off, off the road, longer or shorter. To do this, you need a lightweight off-road bike and luggage - as well as a waterproof, compact bag for your luggage, such as the Seat-Pack L from Ortlieb: a waterproof saddle bag with a roll-top closure and variable volume from 8 to 16.5 litres, which can be used without a luggage rack. A valve ensures quick and easy compression so that your economical packing is rewarded. The Seat-Pack L can be mounted on any bike with a fixed seat post and also acts as a mudguard. It is fastened with strong Velcro fasteners and an internal stabiliser ensures that your luggage is transported safely.