size: 40.5*30*12cmLaptop capacity: 15.6inchMaterial: Oxford clothOpen method: zipperStructure: Zipper pocket, mobile phone pocket, document pocket, laptop pocketStyle: business/campusInternal structure of the bag: zipper pocket, mobile phone pocket, document pocket, interlayer zipper pocket, computer pocketFunction: breathable, waterproof, wear-resistant, anti-theft, shock-resistant, load-reducing