Classification Women’s Bags Men’s Bags Wallet Backpack Backpack Waterproof Dual Purpose Laptop Backpack Product Details:Internal structure of the bag: zipper pocket, interlayer zipper pocket, computer pocketOpening method: zipperFunction: waterproof, wear-resistant, USB charging, shock-resistant, capacity expansion, load reduction, cut-resistantLining texture: nylonColor: black, black canvas, grey canvasNo.: ST1904Material: Water repellent film materialSingle size: 17 inches 33*17+5*49CM; $3