Darkroom Door rubber stamps are mounted on cling foam. These detailed stamps are the perfect way to add fun images to your cards, scrapbook pages and more! Darkroom Door rubber stamps are known for their durability, deep etching and high image detail. To use, simply peel off white backing paper from the back of the stamp and place stamp onto a stamping block (sold separately).Details:Best Things design2.25” x 3” stamp sizeRubber, foam, paperFor use with acrylic blocks (sold separately)