This new breed of gravity defying Nano V2 bugs can now climb up vertically, horizontally, around corners, through loops and tubes, to the tip top of any Nano V2 set. The Black hole set shows the ultimate free fall. The Watch Tower enables V2 enthusiasts to customize the design and layout of the three-level set, unleashing kids" creativity. HEXBUG Nano V2 is compliant with CPSIA standards. Approved for children ages 3 and up.