WATCH IT GROW - Drop this 2” polymer heart into fishbowl sized container, fill with water, and watch it grow to the size of a full sized, adult human heart in just a matter of weeks!MAINTAIN YOUR HEART – You’ll have to show your new heart some love by changing the water every few days in order for it to reach its maximum potential.LIVE OUT A DREAM – Be one of a kind and live out a mad scientist’s dream by growing a heart inside your own laboratory or wherever your science experiments take place.RECOMMENDED – For ages 8 and up.