Bag size: large Internal structure of the bag: zipper pocket, document pocket, interlayer zipper pocket, computer pocket, camera pocket Opening method: zipper Applicable gender: neutral / both men and women Material; Oxford cloth Whether with a lock: No Whether there is a rain cover: no Processing methods: soft surface Style: street trend Lining texture: synthetic leather Strap root number: double root Popular elements: car suture Lifting parts: soft handle Outer bag type: three-dimensional bag Bag shapes: square vertical section Carrying system: Physiological curve backplane Color: blue, black Waterproof degree: waterproof Applicable scene: outdoor sports