Made of 600D polyester cloth and 150D polyester embossed lining, strong and durable Large capacity, it can store 16-inch laptop Dual main compartment design, laptops and documents can be stored separately Designed with a large capacity front pocket, can store a variety of small items The shoulder straps are designed with sponge layer, which is soft and comfortable The band on the back allows the backpack can be put on the trolley case easily