Arches Aquarelle is optimal for both watercolor, and for all wet techniques, ink, gouache and acrylic. This paper is manufactured following the traditional formula in round shape machine. Glued in the dough with natural gelatin: an ARCHES exclusivity. 100% cotton paper. Cotton gives its beauty to paper, a permanent natural whiteness, an inimitable touch, guarantees its strength and its perennial. Preventive fungicide treatment against molds. With alkaline reserve, acid-free, optical brighteners (permanent in accordance with ISO 9701).