Ready, Set, GO! Put play time into overdrive with the Fisher-Price Press 'n Go Monster Truck. Babies will love pressing down on the monster's head to send him zooming forward, encouraging them to crawl after their new friend. Your little one can boost gross motor skills while discovering cause and effect with a silly, colorful monster friend. Where development comes into play; Gross Motor: Babies can boost gross motor skills as they crawl or walk after the moving truck. Sensory: Stimulate your baby's senses with a variety of textures! Curiosity & Wonder: Babies discover that their actions make fun things happen. A great intro to cause and effect!