Multi functional backpack with a three-dimensional and sturdy design, dual compartments and multiple compartments, adjustable shoulder straps, thick elastic shoulder straps, breathable and stress relieving comfort. Large capacity storage space design, scientifically partitioned, with vertical zipper pockets on the front and sides, and a computer compartment, zipper patch pockets, and two small pockets in the back compartment for convenient and fast storage and retrieval of items. The main warehouse adopts an open design, with a 180 degree fully open design and multiple zippered pockets inside, making it easy to store various items neatly. The internal partition is reasonable, and access is convenient and fast..syi