Experience a new level of security and durability with these high-quality mailers. Crafted from robust Tyvek material, these tamper-indicating envelopes ensure your documents are protected during transit. The convenient Redi-Strip adhesive closure provides a secure seal, while the Flip-Stik flap offers hassle-free opening, making them perfect for both personal and business use. Sized at 10 x 13 inches, these white mailers come in a pack of 100, offering a reliable solution for all your mailing needs.