This 12-pack of Carter's 2.75" x 4.27" Micropore stamp pads are pre-filled with bold black ink and are perfect ink pads for stamping. The custom Micropore design is built to last longer in one use than traditional foam and felt pads. No refills or re-inkers are required. Filled with a lasting permanent ink that can be used on paper, wood, fabric and more. Conforms to ASTM D 4236 and ACMI AP-certified as non-toxic, ink is safe for use in schools, offices and homes. The hinged lid snaps closed to help keep the ink fresh. The slim profile also makes it easy to keep these stamp pads stored away until needed. The 2.75" x 4.27" pad is the perfect size for small and medium-sized stamps. Whether you're stamping for crafts, scrapbooks, greeting cards or homework, Carter's stamp pads will make sure every one of your stamps are filled with color.