The Hahnemuehle Watercolor Book is made of 100% cotton fibres that give the paper a natural white tone, an incomparable texture and high resistance to scrubbing. Colors flow superbly on the natural white paper, while brushes slide gently over the surface. The premium hardback book contains 30 sheets (60 pages) of 120 lb. (250gsm) paper with a homogeneous, fine-grained surface structure on the front and back. Suitable for all watercolor techniques, especially the wet-on-wet technique. Masking pens and masking tapes can be removed without leaving any residue. Even the use of an eraser is possible thanks to surface sizing. The pitch-black, sturdy cover with a black bookmark gives the stability that it needs as an indispensable companion. A rubber band closes the book tightly. Like all Hahnemuehle papers, they are age-resistant, acid-free and vegan.