A #7 poly jacket mailer; durable, moisture-resistant, co-extruded (3-layers) polyethylene; constructed with a bottom fold and strong side heat seals for superior bursting strength; pressure sensitive self-seal adhesive closure system is reliable, tamper-evident and easy to use; anti-stat release liner peels off quickly; easy to load contents and seal package. Ink, stamps and labels adhere easily to the surface.