(1) protect from dust and shock (2) material ;nylon (3)size:39.5*31*10CM laptop bag.PU,PVC,Nylon,Polyest material available! laptop bag.PU,PVC,Nylon,Polyest material available!size:39.5*31*10CMDesign:PVC with nylonour products are in good quality and reasonable price.OEM are welcomed,New design !