This is a plastic model kit and assembly is requiredMade in Japan- If you cool it in the refrigerator … the mammoth will be restored! A new sensation plastic model created by a precision skeleton and warmth discoloration resin!- “Exploring Lab Nature” plastic model series is now available!- Uses a special molding material that becomes tinted when the resin temperature drops below 10 C.- The mammoth’s fur turns brown due to the cold air reminiscent of the ice age!- After assembling the skeleton state in the `excavation phase`, you can enjoy the assembly process by attaching the fur parts and moving to the` restoration phase`.- The instruction manual can be transformed into a mini picture book after assembly!