This replacement pad is compatible with the Shiny S-300 and S-309 self-inking stamps. It features water-based ink that is great for stamping on documents, flyers, non-corrugated cardboard, envelopes and more. Customize this pad with one of our 5 standard or 6 premium ink color options. To extend its lifetime re-ink it with water-based ink. Not recommended for glossy and non-porous surfaces. Select your ink color and then click the add to cart button!