The Seven Jack-3WD Trolley is a backpack in every respect, but it features a detachable trolley with 10 cm wheels. The backpack is spacious and has room for everything you need: books and notebooks for school, as well as a water bottle that can be stored in the inner pocket. The padded back and shoulder straps ensure comfortable carrying, while the attachment to the trolley provides a practical, stable, and secure product for on-the-go use.