Ranger Archival Jumbo Inkpad #3, Jet Black Acid free, Non toxic, Waterproof Permanent on matte and gloss papers, Air dries on matte surfaces Heat set on glossy surfaces, Measures: 4  x 6 Archival Inks provide long-lasting stamping results that are permanent on many surfaces Get a crisp image that doesnt bleed over water-based inks and markers, acrylic paint, water colors