Introducing the Bookish 10x13 Mailers, the perfect solution for all your mailing needs. These innovative mailers are designed to be water resistant, ensuring that your important documents and packages stay safe and dry during transit. With a thickness of 3.15 mil, these mailers are strong and durable, providing maximum protection for your items. The strong seal with a convenient peel away strip makes it easy to securely seal your mailers, giving you peace of mind that your contents will arrive intact. Measuring at 10x13, these mailers are the ideal size for a variety of items, making them a versatile and practical choice. Upgrade your mailing game with the Bookish 10x13 Mailers.