Canson Infinity PMK Printmaking Rag Fine Art Paper, 310 Gram , 13 x 19 Inch, 25 Sheets 100 percent cotton rag Bright white, mold-made paper with a smooth, velvety texture Internally buffered, acid free, museum grade paper with no OBAs (optical brightening agents) This box contains 25 sheets of PMK 13 x 19 inch 310 gram All Canson Infinity ICC profiles are available on Canson-Infinity website.