2 years & up. Ultra-Clean Washable Tripod Grip Paintbrush Pens are perfect for the beginning artist. The triangular shape is easy to grasp while guiding little fingers to a proper writing grip. The triangular shape also prevents paintbrush pens from rolling away and getting lost. Includes four self-contained brushes in washable ink colors (red, yellow, green, blue) for easy painting and clean up. Single set contains 4 paint pens and the Classpack includes 24 pens in 4 colors.