U style zipper deign, it is more convenient to store things. Handle design in the top, it is convenient to carry. Water bottle bag design, it can adjust and fasten by the retractile rope. With magic tapes to fasten at the bottom, it is easy to adjust and install. It is suitable for bicycle. Specifications: Color: Black Material: 600D Polyester Product weight: 365g Package weight: 393g Product size: 28 * 16 * 14cm Package size: 44.5 * 23.8 * 7.5cm Package list: 1 * Bicycle rear trunk bag