... 4,mail,courier bags 5,Courier use Introductions:Mailing bags, also named Mailing envelopes courier bags,experess bags, ... materials,Samples TIANBAI PLASTICPhotos,Printed ,CataloguesAnd other mail things Standard Sizes:1, 6" x 9 ... bags 3,Has the column for write adress bags 4,no printing bag 5,bubble lining mail ... bag 6,single color bags 7 ...