Mailers in these listings are made from polyethylene, while mailing boxes are made from cardboard.
Poly mailers are offered in bulk counts such as 100 and 500, while the mailing boxes are listed as single units (Package Quantity: 1).
Descriptions emphasize moisture protection and a tear-resistant, high-strength polymer construction designed to resist tears and damage during transit.
Poly mailers are shown in colors such as green, pink, and blue, while the mailing boxes appear in white or brown.
Envelope listings show weights in ounces (examples: 1.8 oz, 7.5 oz, 10 oz). Box listings show weights in pounds (examples: 0.25 lb, 0.4 lb, 0.67 lb, 0.94 lb, 0.6 lb).
