Capacity: can hold 14-inch laptop, 20-35LExternal structure: zipper bag, side pocketSize: 32*15*45Fabric: Water-repellent polyester fabricLining: polyester liningBag size: mediumThe internal structure of the bag: zipper pocket, ID pocket, computer pocketOpening method: zipperMaterial: NylonFunction: wear-resistant, anti-theft, anti-vibration, lighteningModel: Multifunctional backpackProcessing methods: soft surfaceHardness: medium to softpattern: plain Style: college styleStrap root number: double rootPopular element: chain