The Ortlieb SEAT PACK QR 13L is the perfect bike bag for every cycling adventure.

Featuring Ortlieb's patented Seat-Lock attachment system, this abrasion-resistant nylon fabric bag can be assembled in no time and disassembled just as quickly without leaving any marks. With an adapter collar, this waterproof model is even suitable for drop-in seat posts, needing only 4.3 cm to fit the Dropper Post. It adds an interior reinforcement and five compression straps to ensure the safety of the contents, while a valve with grip loop helps compress the pack volume.

This model also adds an elastic cord on the outside to allow for the attachment of additional equipment and a tire guard with a protective plate underneath that also acts as a mudguard.