Speedball Art Products-Fabric Block Printing Ink. This water- soluble block printing ink in bold color dries to a rich satiny finish. Designed with excellent tack, each ink provides even coverage and consistent results with each application. For use on cotton. Polyester, blends, linen, rayon and other synthetic fibers. Also works great on paper and cardboard. Cleans up easily with soap and water. This package contains 2.5oz of printing ink. Conforms to ASTM D 4236. Comes in a variety of colors. Each sold separately. Made in USA.