9 Months+. Press N Go Inchworm is the fastest inchworm around! Kids can press down on the happy little Inchworm?s back and watch him zoom across the floor for hours of cause and effect fun. The wheels of the Press N Go Inchworm feature colorful moving beads and his back is decorated with bright geometric shapes, all of which intrigue and engage young ones. Best of all, the Press N Go Inchworm is easy to press for speedy and long distance travel! No batteries required