Large capacity portable carrying bag for urban students with simple design, horizontal fabric, single shoulder, quadrilateral

Material: Fabric (not soft) closed zipper, open internal pocket, polyester lining【More expensive, much better】Using fabric, there is a certain stiffness, not soft, the empty bag can stand. Size (front structure) width 31 cm / height 29 cm / side width (base thickness) 10 cm handle height 13 cm / shoulder length 110 cm can hold a 15.6-inch laptop (length not exceeding 37 cm), A4, etc. (Note: Due to different measurement methods, there will be an error of 1 to 3 cm, please note that)