... ,size,packaging,colour.etc are welcome8:appearance:white outer,gray inner Proformances:It has the many proformances,like durability, Multi-layer ... /PE, CPE and EVA. etc. Types of the bags:1,inner gray,outer white,with a PE pocket 2,the common ... for write adress bags 4,no printing bag 5,bubble lining mail bag 6,single color bags 7,aluminium foil bag ...