Ortlieb Back-Roller Plus Pannier - 23LRollin', Rollin', Rollin'If you're commuting to work by bike or enjoy bike packing, you'll love having panniers on your bike. They make it easy to carry an ample amount of gear while you're riding. The Ortlieb Back-Roller Plus Pannier is the ideal bike bag for those who prefer the convenience of the roll closure system. The durable, waterproof, dustproof, abrasion-resistant, and high-quality Cordura fabric ensures optimal protection for your gear. Equipped with the sophisticated QL2. 1 system with self-closing hooks, the Ortlieb Back-Roller Plus attaches to your bike in a flash. It also features a detachable shoulder strap to carry your bike bag comfortably once you've arrived at your destination. Features QL2. 1 system for racks up to 16mm Includes an integrated inner pocket and shoulder strap Highly reflective Scotchlite reflector enhances your visibility in low-light conditions Dimensions: 16. 5" x 9" x 6. 7"Total volume: 23LWeight: 910g | Ortlieb | Back-Roller Plus Pannier - 23L Black