- 4.5×6.5 inch is usable size; external width is usable width 4.5 inch, external length is usable length 6.5 inch and additional self-adhesive part 1.57 inch
- The thickness of metallic foil material is 3.4mil (one side)
- Self seal design with strong adhesion makes the mailer work for your purpose and not need extra tape to seal
- The material of this metallic poly mailers is stronger than shipping poly packaging
- The mailing bags used for shipping and packaging