The exterior of this backpack is made from a strong ABS/Polycarbonate mix to ensure years of use and abuse‎.‎ This backpack is perfect for your childs 1st day of preschool‎,‎ kindergarten or that long summer family road trip‎.‎ The bright colors always help you keep an eye on your young one from long distances and the strong hard shell helps prevent damage to contents when stepped on or accidentally dropped‎.‎