Whether you’re riding singletrack, mountain passes or gravel routes, with the waterproof Seat-Pack QR you are ready for every bike adventure. With the innovative and patented Seat-Lock attachment system and abrasion-resistant nylon fabric, the bag is super stable, quickly mounted and just as quickly removed without leaving any residue. And with the help of a special adapter of just 4.3 centimeter in width, this bag can even be used with a dropper post. The internal reinforcement and five compression straps ensure that the contents are packed tightly and securely. A valve with a handle strap helps to compress the pack volume, and the elastic cord on the outside allows for the attachment of additional gear. To prevent damage from tire contact, a protective plate is attached to the underside of the Seat-Pack QR, which also doubles as a fender. SPECS: Height: 6.3 in Width: 16.5 in Depth: 8.7 in Volume: 7.5 L Load: 6.6 lb Weight: 17.3 oz Waterproof: Yes (IP64) Material: PU-coated Nylon (PS21R, PS33) Mounting System: Seat-Lock