Come and see our amazing products. This backpack is made of high quality Oxford cloth, scratch-resistant, wear-resistant and water-resistant.Built-in large capacity space, can be a one-time load of your computer, files, tablets and other items.The S-shaped ergonomic shoulder straps on the back and the use of heat-dissipating pearl cotton are scientifically designed to reduce the burden, so that you will not feel uncomfortable when you are on the back.External USB charging port, charging while walking.Print your logo on the backpack and make it a great promotional product. Pls confirm further with us if any query about packing info, inventory status and time schedule.