USB Charging Large Capacity Computer BackpackProduct information: Material: Oxford cloth Opening method: zipper Bag internal structure: mobile phone bag Bag size: small Bag shapes: square vertical section Function: Waterproof Processing methods: soft surface Pattern: plain Carrying parts: soft handle Strap root number: double root Outer bag type: inner patch pocket Lining texture: polyester Color: Khaki, blue, black, gray Size Information: Size: width 18cm thickness 7cm height 30cm Packing list