Balloon Power, Fun Science Enlightenment Recoil experiment: by inflating the balloon and then releasing it, it visually demonstrates Newton's third law, allowing children to understand the principles of physics in play. DIY assembly: the set contains a removable car chassis, wheels, balloon clips and other components, the child can hand-assembly, exercise hands-on ability and logical thinking. Safe design, parents can rest assured that the choice Food-grade materials: the body is made of ABS environmental protection plastic, the balloon is made of natural latex, non-toxic and tasteless, through the national 3C certification. Anti-burst balloon: the balloon thickness is upgraded, anti-stretching is not easy to rupture, to avoid the risk of splashing debris. Rounded corners: no sharp edges on the whole car to protect the delicate skin of children. Parent-child interaction, share happy time Multi-player competition: support 2-4 cars to race at the same time, parents and children team up to test the speed with different sizes of balloons to cultivate the sense of competition and teamwork. Creative track: with the complimentary colourful stickers, children can freely design the track, combined with books, cardboard boxes to build a three-dimensional track, stimulate imagination. Rich scenarios and various ways to play Indoor and outdoor use: smooth desktop, floor, outdoor playground can be used, rain or shine can play. Theme expansion: support with LEGO blocks, track toys, etc., to create an exclusive balloon power town.