1.Material is Nylon, 2.Broken-proof material inside; 3.Computer bag; 4.Backpack; 5.Simple and firm. 1.Material is Nylon, can also as requested;2.Broken-proof material inside; can protect computer very well.3.Computer bag;4.Backpack;5.Competitive price ;6.It can be customized to your need ;7.More information please send e-mail or make phone call . 2012 High Quality Nylon Laptop Computer Backpack