The perfect bike pannier for any worker or student who commutes on their bike. This Ortlieb Commuter-Bag Two Urban QL21 20L Ink is specially designed to carry a laptop and can also accommodate A4 documents with ease. Its stylish design makes it a perfect accessory to complement any outfit, and it is incredibly comfortable to carry with its adjustable shoulder strap and soft shoulder pad. The bag attaches to the bike using the included Quick-Lock 2.1 system. This system features a rotating holder rail, allowing the bag to be attached to either side of the bike rack. It is compatible with rack tubes up to 16 mm in diameter. The bag is made from durable polyester material and is completely waterproof, ensuring your belongings stay dry even in the rain. It also features side reflectors for increased visibility and a convenient outer pocket for items like keys or a smartphone (please note that the outer pocket is not waterproof). Suitable for both men and women, this bike pannier is a must-have for anyone who wants a reliable and stylish way to carry their belongings while cycling.