This paper has an acid free base, PH Buffered, 100% cotton rag on 330 gsm weight. It has a bright white surface and an ultra smooth finish for excellent colour and black & white reproduction. With extreme high D-Max for high contrast, it dries instantly and has a wide colour gamut. Artists and professional photographers require true archival print media in a variety of weights and surface textures for their digital fine art and photography. Now Epson brings you an acid free,100% cotton hot press paper that is coated on both sides for extra versatility. This cylinder mould-made product features an ultra smooth finish on two sides (sheets) that is optimised for Epson UltraChrome Inks. The velultra smooth surface is a favorite of photographers and artists alike, offering a unique high quality fine art feel. Combining impressive fine art cotton with Epson technology has created a paper that will be a classic for years to come. Like all Epson's innovative media, this paper is engineered to give you the highest resolution and color saturation possible. As always, EPSON supplies guarantee EPSON quality.