Come and see our amazing products. The multifunctional backpack is made of high quality nylon, it is larger capacity with double layer space, it is easily meet to work for business trip and travle. the internal thickened shokproof later edsign can effectively prevent the laptop from being impacted.Backpack strap isfixed the backpack on the trolley case for more convenient travel.More than 300 is shipped by Sea. Pls confirm further with us if any query about packing info, inventory status and time schedule.