What is a Zhu Zhu pet without a little zoom? Give your Zhus the time of their life with the Zhu Zhu Pets Adventure Ball Purple . Open the door, clip your favourite Zhu onto the small plastic base piece (Zhu sold separately), close the door and clear the way! These hamsters are in a hurry. Keep up as your furry friend scurries around their Adventure Ball and rolls into excitement! Let’s Zhu this! The Adventure Ball is made for kids aged 4+. No batteries required.