Clear View Poly Envelopes, 9" x 12", Clear/White (CV912) Case Of 500Clear View Poly Mailers are ideal for mailing catalogs and brochures, offering a combination of visibility and privacy. Made from tear resistant poly material, these mailers feature a clear front to display the contents, while the opaque back allows for secure placement of address information and postage. With a self seal closure for quick packing and double perforations for easy opening, they provide both security and convenience for mail recipients.