These fine quality self-sealing mailer envelopes help ensure the contents of your deliveries stay safer during shipping. Measuring 12.8″ x 9″, the envelopes are made of eco-friendly natural 120gsm kraft paper with peel-and-seal adhesive closures. With your logo or message printed on each, these branded envelopes are great for mailing materials from offices, stores, schools, homes, or anywhere else where mail delivery is needed. Orders of 5,000 pieces or greater are eligible for sea shipping.