Heavy card stock with trimmed edges, natural fibers, and an acid-free, neutral pH offered in four earthy, natural colors 330 grams This paper has a large weight and is sized both inside and out. unprocessed texture Ideal for printing Many artists use it for gouache, which is molded from 15% cotton, 85% sulphite, neutral pH, and raw, natural fibers with an internal and external sizing. The mold is made in Italy. Ideal for printmaking as well as book art