Think mayonnaise. Mayonnaise and pigment ink are about the same consistency. Thick and rich, pigment ink sits on top of the paper. Pigment inks are generally pretty slow drying, giving you plenty of time to emboss and blend on coated and non-absorbent papers. These inks offer long lasting, luscious color from delicate pastels to deep, saturated hues. ColorBox Classic Pigment ink is water based, light-fast, acid-free, pH balanced, and archival quality. The ColorBox full size inkpad is filled with loads of juicy color that lasts and lasts. The raised pad allows the inking of any size stamp. Large size, raised pad, and long lasting color mean great value. ColorBox full size inkpads are available in a variety of colors, each sold separately. This package contains (1) 4" x 2-1/2" stamp pad with 3 colors. Available in a variety of color combinations, each sold separately. Conforms to ASTM D4236. Re-ink with ColorBox Refill Pigment Ink only, sold separately.