ColorBox Archival Full Size Dye Ink Pads are fast drying, permanent, non-toxic, acid-free, perfect for watercoloring, and dry waterproof. Archival ink pads are fade-resistant, water-resistant ink pads. They do not deteriorate paper or precious photos. They will not bleed when using paint or brayer with watercolors, colored pencils, water-based inks and markers or pearl pigments. Archival ink will also dry on glossy paper and is a great ink for stamping high detail images. Each pad is approximately 2.25 x 3.75.