Waterproof, durable and expandable laptop backpack

Color: advanced blackProduct size: 55*20*33CMMaterial: 1680D+210D liningProduct: Simple style, common for men and women. The backpack has large capacity and wear-resistant material, which is suitable for daily use, sports, TRAVEL, etcABOUT THIS ITEM Expandable & Large Capacity: One separate laptop compartment. One spacious packing compartment roomy for daily necessities,tech electronic accessories.The backpack with many compartments, organization and expansion. You can expand the zipper and buckles according to your requirement. The two handles set on top and one side, which allow an easy switch between backpack and suitcase. So it can be carried vertically or horizontally. Durable Material & Best Gift Choice: This backpack for business is made of water resistant and sturdy polyester fabric with metal zippers. It provides more protection for your items in rainy day and long-lasting usage for everyday & weekend. USB Port & Anti-Theft: With built in USB charging cable, t