This ClearDesign Supply Kit has everything you need to get the most out of the Hero Arts ClearDesign sets. It includes: a Large Acrylic Block (3" x 4.5"), the perfect size for use with the large letters, backgrounds, and frames; a bottle of ClearDesign Ultra Clean, a cleaner that is safe to use with clear stamps; and a ClearDesign Scrubber Pad (7.5" x 4.5"), which is black inside so that it wears well, and has a bottom pad that comes out for easy washing.