As a truly fine art paper, the Epson Cold Press Natural Paper 17 X 22 (25 sheets) is a high-performance, extremely-smooth surfaced paper, designed for professional photographic use. The bright textured surface provides extreme sharpness and depth with an incredible Dmax and rich color gamut. This is a natural smooth matte paper made of 100% cotton rag media. It is an acid free in addition to being lignin, and chlorine free. In addition to that it is also pH buffered with calcium carbonate for a true archival sheet. This paper is highly recommended to be used with compatible Epson UltraChrome and Archival Ink.