Hahnemühle : the Collection : SketchHahnemhle Sketch is the only 100% cotton sketch paper in the Hahnemhle Collection. The elegant paper has an exceptionally grainy texture, which can only be achieved through the use of natural felts in the production process. The grainy surface of the natural white paper allows for exceptional colour adherence. Smooth transitions and delicate hatching create depth and 3D effects. At 140 gsm, the exquisite paper is robust yet pleasingly flexible.