Downtown Starter Set with Exclusive Sophie Zhu Zhu Hamster! Kick off your Zhu-niverse with this deluxe ZhuZhu City playset and Sophie, a blue ZhuZhu hamster with a heart-shaped sign with a crown birthmark and a bold personality to match. With customizable track and ability to connect with other Zhu playsets, you can build your perfect habitat for your hamsters to explore. Where will your ZhuZhu zoo? Recommended for children ages 4 and up.