1With light and simulation train sound, which can attract kid's attention. 2DIY car track can exercise children's hands-on ability, stimulating their thinking. 3Environmentally friendly and safe, without any harmful substances, children can play with confidence. 4The track is made of bright color, which can exercise the baby's visual discrimination and hands-on ability. 5Parents and children can complete the assembly of tracks together and cultivate the communication and coordination ability between parents and children.