The product is a set of 500 premium poly mailer shipping bags by Mail Budz. These envelopes feature self-sealing and peel-n-seal closures, making them convenient for shipping. With interior dimensions of 10x13 inches, they are ideal for various shipping needs. The product is made in the United States and ships daily, usually on the same day. It is designed for shipping purposes and offers a reliable and efficient way to send items securely.