Recycled Photo Mailer Envelopes will keep photos in pristine condition. These mailer envelopes are stiff and made of 130 lb cardstock to keep photos from bending. The self-adhesive strip makes for an easy peel and seal that keeps the envelope closed. They are available in a variety of sizes to fit any and all photos. The brown Kraft color makes these envelopes perfect for professional and personal use. Brown Kraft Recycled Stay Flat Photo Mailers Size: 12.75 x 15 inches Quantity: 6 Mailer Envelopes per Pack Features a self-adhesive strip for quick and easy closure & is made from 100% recycled content These photo mailing envelopes are available in a variety of sizes.