The premium high-gloss finish delivers even more color with HP's latest inkjet cartridges so your photos remain vivid and true-to-life for years. Studio-quality weight and thickness ensure a sturdy look and feel for photos perfect for sharing with friends and family, and displaying in frames or albums. It meets the challenge of even the most sophisticated inkjet photo printers to deliver vibrant, consistent color, accurate skin tones, and rich, glossy black for stunning, high-impact photos. It provides an impressive finish and high-gloss sheen that intensifies colors to the max even over traditionally processed photos. It produces even more brilliant color with a new glossier formulation, and when printed with HP's newest technology inkjet cartridges. Also, printing with HP Image Zone Express enhances the image quality of images sent to the printer. It is only 11.5-mil thick.Acid free, lignin free, calcium-carbonate free