Product detailsProduct information:Bag size: mediumCapacity: 20-35lSize:45*15*28cmInternal structure of bag: zipper pocket, mobile phone pocket, certificate pocketCover opening method: zipperApplicable gender: Male / femaleMaterial: Oxford clothFunction: breathable, wear-resistant and load reducingProcessing method: frostingHardness: medium to softApplicable gift giving occasion: employee benefitsStyle: LeisureLining texture: PolyesterAccessory type: USBPopular element: solid colorBag shape: vertical squareBackpack system: air cushion strapColor: red, light gray, blue, black