Detailed Poly Mailers Description: 1)bubble linner bags 2)Shock-proof and recyclable 3)ROHS and SGS certifications Poly Mailers Detailed feature: 1.Good quality as the express bags 2.ROHS and SGS certifications 3.Usually the thickness of the poly is about 50-60mic. 4.Your sizes and logo print are acceptable. 5.As a trial order, the quantity could be customized 6. Free samples are available. Poly Mailers Specification: 1.The poly layer, outer is white and inner side is grey. the surface is very smooth and hard to tear,good quality as the mailer bags 2.Light nad less volume for delivery 3.Widely used as the mailing bags and packing bags. 4.The bag has a smooth surface and hard to tear. 5.Print acceptable. 6.Custom size and design available 7.free samples sent as reference. 8.Good protection during delivery and express 9.The materials of the bags are all new and could be 100% recyclable and it is environmental.