Description: Speedball Fabric Block Printing Inks are made specifically for those who love creating unique designs on fabric but hate heat-setting. Made from a water-washable oil, these inks print with bold, opaque color and maintain a soft hand. All colors carry the AP Seal and clean up easily with soap and water. Use on cotton, polyester, blends, linen, rayon, other synthetic fibers as well as paper or cardboard. Not for use on nylon. Printed fabrics can be laundered after curing one week at room temperature.