... ,durable material of 1680D,top handle,mesh pockets on side for water bottle,padded back and shoulder straps comfort. laptop backpacks ... laptop bags. Different size and material are used. materail: 1680D polyester and 210T lining,size44*31*14,packing size47*35*43 ... outer bags, inner pouches: one case,Quantity of mesh pouches for water bottle: two, laptop layer: available.