Product Description Our permanent waterproof ink can be used to print on nearly every surface! Stamp colors in brilliant hues on paper, fabric, clay, wood, and more! Each case 3 7/8″ x 2.75″ (10 cm x 7 cm) is printed with corresponding ink color. Conforms to ASTM standards. Superior Quality Stamp pads with inks made in the USA. These vibrant and long-lasting inks work on a variety of surfaces like cloth and are certain to fit any of your crafting and stamping projects.