Hahnemühle Watercolour 300 and 640 set new standards for high-quality watercolour papers. A carefully chosen variety of cotton offers extremely strong fibres and incomparable purity. The selection of the best raw materials and exclusively natural filler materials gives the Watercolour 300 and Watercolour 640 papers their unparalleled quality. The prized cotton papers, Watercolour 300 and 640, are characterised by a very durable paper surface that is well suited for demanding watercolour techniques. The fibres do not lift, rub off or loosen, even when applying multiple layers of colour, or when using masking fluids and tapes. This paper lets you use the most beautiful colours and create remarkable wet-on-wet paintings.