Playfoam® Classic 4-Pack from Educational Insights. The ONLY no-mess creativity substance for preschoolers! Ages 3 - 8. Preschoolers are free to express their creativity... with no mess to clean up afterward! Just squish up the Playfoam®, shape it however you like, squash it back down, and start all over again. Playfoam® never dries out so the creativity never ends -- and the secret no-stick formula means you can take it anywhere for creative fun on the go!