These sturdy 6x9 catalog envelopes are the ideal choice for mailing brochures, catalogs, marketing materials, photos, and other important documents. Made from 28lb. brown Kraft paper, they offer a rustic yet professional appearance that adds a touch of personality to your mailings while providing reliable protection for your contents. The convenient Peel & Seal flap ensures a quick, secure closure without the need for moisture, making these envelopes both easy and efficient to use.