Watercolor painting drawing block 300 gsm (100% cellulose) Professional Series water colour painting papers of Netherlands origin. Our artist papers are manufactured using formulas with the purest ingredients, giving our acid-free products exceptional properties that include high resistance to ageing, color fastness and pH neutrality. The specialty in this artist paper lies in the application of surface by means of high quality felt making and pressing. The paper is strong; great for drawing-like watercolors / pen and wash painting. This paper gives you a nice flow and accurate color reproduction. 300 gsm , starch sizing, colourfast, acid free, cold pressed paper, both sides paintable Watercolor drawing paper.