Made of clear acrylic material, these blocks are easy to clean with water and towel, you should 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 - Color: As shown. - Material: Acrylic. - Size: 5x5cm/ 2x2inch; 7.5x7.5cm/ 3x3inch; 10x10cm/ 3.9x3.9inch. - This Acrylic Block with white grid lines, which perfectly marked for precise and accurate stamp positioning. - They are also easy to clean with water, soap and towel, you should 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 x 5cm Acrylic Clear Stamping Blocks 1 x 7.5cm Acrylic Clear Stamping Blocks 1 x 10cm Acrylic Clear Stamping Blocks