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 into the dough with natural gelatin: an exclusivity ARCHES. 100% cotton paper. Cotton provides its beauty to the paper, permanent natural whiteness, an inimitable touch, guarantees its strength and its perenniity. Preventive fungicidal treatment against molds. With alkaline reserve, no acid or optical bleaches (permanent in accordance with ISO 9701).