Let your imagination take flight as you paint on the Arches Aquarelle watercolor pad. Use this cold press paper to create beautiful artwork with watercolors, gouache, and inks. Each sheet is painstakingly crafted from 100Percent cotton fibers, so it doesnt bleed or warp. To make these natural white, acid-free papers stable, they are designed on a classic cylinder mold. With natural gelatin used to size it, these one-pound sheets wont tear when scratched. Your paints will retain their beautiful sheen on this Arches watercolor pad. 12 sheets9 in x 12 incontains alkaline reservewithout optical brightening agents (adheres to ISO 9706)fungicidal treatment to prevent mold buildup .