Backpack bag 1)good sewing, good material 2)many pockets, many layers for assort the stuffs clearly 2)reasonable price Backpack bag 1, One main compartment whit one pocket for books and collection and so on. 2, Roomy main compartment opens fully for easy packing and unpacking of books,foods clothes, or others. 3, Two lenient webbings for easy packing and comfortable for shoulders 4, Front zipper ...