This pack of 25 6” x 9” poly bubble mailers padded envelopes shipping mailing bags are perfect for shipping and mailing items. Made of 4-layer composite polyethylene bubble film, these grey mailers are water-proof, moisture-resistant, and tear-resistant. The self-seal feature ensures secure delivery of your packages. Ideal for businesses and industrial use, these mailers are designed for durability and protection of your items during transport. Made in the United States, these poly bubble mailers provide a reliable and efficient shipping solution.