Chalkboard solar system lg 1ct. Solar system mat. 12” x 17”. All chalkboard mats are: Reusable Double sided (one side printed, the other plain) Easy to erase with a cleaning spray, baby wipe or damp cloth Full color care instructions and UPC code label Can be used with chalk, chalk crayons (ours are great), or chalk markers Can handle "kid" treatment The mat is Made in China but when possible or practical we print them right in our office in Michigan.