Made of clear acrylic material, these blocks are easy to clean with water and towel, you shall clean them before every application for better experience in using, good for stamping craft projects like notebook, journal, cards, invitations, scrapbook pages, stamps, schedule book, clipboard, planners, etc. Features - ColorWhite - Material: Acrylic. - Size: 5cm / 1.9inch; 7.5cm / 2.9; 10cm / 3.9inch(3 pieces). - Clear stamps block with grids can help with positioning the of your stamps, and the curved edges of the acrylic blocks are to fit your fingers tightly for easy grip, and blocks with rounded corners will provide you with a comfortable and safe grip. - They are also easy to clean with water, soap and towel, you shall wash it before every application. - for stamping craft projects like scrapbook pages, notebook, journal, cards, invitations, collages and more with a variety of stamp sizes. - To ensure a strong cling with your clear stamps, wash the blocks regularly with a wet towelette or clean water and mild dish soap. Dry with a paper towel before using. Package list: 1 * 5cm Stamping Block 1 * 7.5cm Stamping Block 1 * 10cm Stamping Block