Set of 4 Melissa and Dough Learning Mats for ages 5+. Assists learning counting, subtraction, handwriting (print and script) and addition. Each mat is double sided. Use no. 2 pencils or Melissa and Doug crayons (can buy crayons on Amazon) only. Use clean eraser to remove pencil or wet paper towels to remove crsyon marks. Not for use with regular crayons, markers or dry-erase markers. Each mat measures 11" x 17 ". Like new.