American Crafts-Amy Tan Better Together Acrylic Stamp: Postcard. The perfect image to add to any crafting project! For use with acrylic stamping blocks and stamping ink (not included).This package contains one clear acrylic stamp on one 4-1/2x6-1/4 inch backing sheet. WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm- do not mouth or chew. Imported.