... Cushioning, static-free, buffering, positioning2, The size can design according DVD.3, Environmenta material: PE and NY compounding instead of styrofoam ... stand 200KG pressure when bags filled air ,it can protect DVD well when in shipping6, all air bags are strictly produced ... ISO9001 and ISO14001. Follow is other electronic air bags pack DVD player shockproof box(new packaing instead of styrofoam)