white poly mailer

They are typically made from polypropylene (plastic) and use 3/16" internal bubble cushioning.

Most listings show self-adhesive peel-and-seal closures described as tamper-evident, designed to show visible signs if opened.

Options range from single mailers to multipacks. Common pack sizes shown include 1, 4, 25, and 50 units.

Some listings specify both outside and usable (interior) dimensions. Examples: outside 9.5" x 14.5" with usable 9.5" x 13.5", and outside 12.5" x 19" with usable 12.5" x 18".

Product details specify 3/16" bubble cushioning inside the mailers.

The plain white finish provides a clear surface for handwriting addresses or applying postage; some listings note that additional labels aren’t required.

Some listings note the mailers contain 50% recycled content and are store drop-off recyclable.