Tell your story with chalkboard! Our durable chalkboard signs are made of rigid polystyrene with applied chalkboard surface. Designs are printed directly on the product with fade-resistant technology. Create memories and document moments that will last forever in photos of your precious child. CARE INSTRUCTIONS: Recommended for use with liquid chalkboard markers (sold separately). To remove erasable liquid chalk ink, wipe with a damp cloth or sponge. We recommended completely cleaning the product before storing. If the written image remains after washing, clean with isopropyl (rubbing) alcohol. DO NOT use strong cleaners or anything containing strong solvents, ammonia or abrasives.