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