Pull back car adopts high-quality alloy shell and plastic chassis, which is light, compact and non-toxic. No battery is needed, and it will be released when it is pulled back, which is easy and interesting. Perfect for party favors for kids 3-5, 4-8. These race car party favors are designed with smooth surfaces and curved corners, which do not hurt hands and do not need batteries. Just pull them back and release them, and the mini cars will automatically move forward quickly, and children will feel interesting and happy. They can filled in kids party favor bags, goody bag fillers, treasure box, birthday gift, christmas stocking, easter egg, valentine's day gifts, teacher classroom prize, carnival prize, raffle prizes.