Kraft Tab Lock Mailers are durable chipboard flat mailers designed to protect photos, documents, diplomas, certificates, prints, artwork, and other flat items during mailing or storage. The kraft exterior offers a clean, natural presentation, while the rigid construction helps guard contents against bending, creasing, and edge damage. A built-in tab-lock closure keeps items secure without adhesive, making these mailers a practical choice for offices, schools, ecommerce sellers, printers, and fulfillment teams.