These blank mailing envelopes are ideal for sending important documents, acceptance letters, and files. Made from paper, they ensure your items are protected during transit. The sleek design and secure self sealing strip make them ideal for both personal and professional use, providing peace of mind that your contents will arrive safely. Features -Color:White -Material:Paper -Size:35.00X28.50X1.00cm/13.76X11.20X0.39in - material: crafted from wearresistant materials, these mailers ensure your documents remain intact during transit, providing reliable protection against potential damage -Waterproof design: designed to resist water and moisture, these envelopes safeguard your items from rain or humidity, making them ideal for shipping in various weather conditions -Spacious capacity: featuring a large storage space, these mailers can accommodate multiple documents, certificates, or small items, catering to diverse mailing needs - opening: equipped with a convenient tear strip, these envelopes allow for quick and easy opening, enhancing efficiency for both office and personal use -Rigid mailers: protect art prints, photos, CD, books, certificates, and important documents with this mailing envelope; use stamps, labels, and colorful ink to personalize Package list: 20pcs x envelopes