1,sealing,fastness 2,good security bag 3,Good Quality mailng bag 4,PE pocket mailing pocket 5,best quality&competetive price Mailing bags also named courier bags,experess bags,mailing bag-fast sealing,fastness,good security,handy use. Specfication:provide by user(or we designed for you) Application:to pack shoping or posted by courier industry or retailer Character:Double ealing lips with easy- ...