Its a great toy to exercise kids physical coordination, color cognition and so on! What a great sensory training! Not only be an indoor-playing toy, but also can be taken to the beach, park, garden, etc.. What an indispensable playmate for children! Realistic vehicles help kids learn about the structures, working principles and applications of machinery in real life. Exceptional high quality moving vehicles are made of strong die-cast metal that can stand rough play.