Environmental-friendly mailing labels offer a face sheet made of 100 percent recycled post-consumer fiber and is processed chlorine-free (PCF). Adhesive meets the USPS specifications to be safely recycled. Labels are acid-free and lignin-free so they are safe for archiving and will not yellow. Compatible with both desktop laser and inkjet printers.WHITE3000 per BoxSold by the BoxRecycled, Contains 40% Post Consumer Waste