The 14891-A-SA Trunk bag is a versatile and durable bicycle rear rack bag designed for mountain bikers. Made of 1000D polyester with a PU coating, the bag features a harnessed main pocket access, a dome-shaped cover, and 2.5mm thick PU board for support. It includes a big logo printed in light-reflective color and light-reflective belts on both sides for safety. The bag has a total of 5 pockets, including 1 main pocket, 1 front pocket, 1 top pocket, and 2 side mesh bags, providing ample storage space. The bag is easy to mount using 2 hooks and 1 hook/loop strap and allows for quick release and mount.