Zeal X Single Kraft Paper Mailer, the use of composite bag approach, in the lining of the film treatment, can play a waterproof, oil proof. This envelope bag is made of single-sided kraft paper + waterproof coating. The side edge is 0.5-1 cm to prevent the package from bursting during transportation. The appearance of the kraft paper can print the pattern logo in higher definition, and you can write remarks on the kraft paper. The opacity of kraft paper can better protect the privacy of the package, and the surface hides the content of the package, so that people can not snoop. Strong adhesive seal, will not fall off, open along the way.