Archival Inks™ provide lasting stamping results that are permanent on many surfaces. Get a crisp image that doesn't bleed over water-based inks, markers, acrylic paint, watercolors, and more. Pads can be easily re-inked with the coordinating Archival Ink Re-Inker. Measurements: "Case: 3 7/8” x 2.75” Pad: 3 1/8” x 2”