This bike pannier bag features has large space for your items. It includes a main compartment, a mesh pocket and elastic bugee cord, rear pocket, and two side pocket. The two side pocket can be unzipped to expand the space for larger capacity. With a removable shoulder strap, this bike bag can also be used as a shoulder bag or handbag, great for cycling and weekend trips. Features: High-quality polyester fabric, water-resistant and scratch-resistant. 10L-25L expandable capacity - unzip the two side pockets for larger storage space. Mesh pocket and elastic bungee cord for raincoat or towels. Rear pocket for water bottle, gloves, rain cover, etc. Reflective strip to increase visibility and safety at night. Comes with a removable shoulder strap, the bag can be used as a bike trunk bag, shoulder bag or handbag. Includes a rain cover to provide additional protection. Specifications: Material: Polyester Color: Black / Blue / Red (optional) Dimension: Approx. 33 * 23 * 26cm / 13.0 * 9.0 * 10.2in Weight: Approx. 720g / 1.6lb Package List: 1 * Bike Trunk Bag