poly mailers

Most listings show polyethylene as the mailer material; a smaller number use polypropylene.

Listings show both outside and inside measurements. Representative examples include: 6x10 (outside) / 6x9 (inside); 9.5x14.5 (outside) / 9.5x13.5 (inside); 4x8 (outside) / 4x7 (inside); and 14.25x20 (outside) / 14.25x19 (inside).

They use a bubble-lined interior construction. Several listings specify a bubble lining of 2/16 inch and describe bubble-lined wall construction for added protection.

They’re described as suitable for mailing papers and documents (letters, photographs, paintings) and for small or delicate items such as jewelry, stones, coins, buttons, and similar small goods.

Kraft mailers are described as water resistant, while the interior polyethylene bubble lining is described as waterproof.

Listed weights across items include: 6.1 ounces; .65 Pounds; .44 ounces; 1.25 ounces; 6.25 ounces; .32 ounces; and .36 ounces.

Some listings present dimensions as “Dimensions (Overall)” with length and width in inches, while others show separate “Outside” and “Inside” sizes for the mailers.