Arches Watercolor Pads are made from the same great Arches Natural White, 140 lb. watercolor paper which is 100% cotton and acid-free. The watercolor pad is ideal for watercolor, gouache, ink, acrylics, drawing, and printmaking. Also the pad is strong enough to withstand many washes of color, masking fluid, scrubbing, and artist's tape leaving behind no surface damage. Available in a 12 sheet, top-taped pad.