Pull back 5 Pcs Colorful cars help kids to learn about different rescue team vehicles their purpose and different colors. The main function is to enhance their practical ability, artistic cognitive, cognitive ability, imagination and creativity skills. Simply pull back & let it go.It will be great fun playing with mini model cute designs of 9 different vehicles No battery needed- Just pull it back and then the vehicle will automatically go easy to play with kids to make an amazing time to interact with toddlers. The toy cars are made of non-toxic plastic material. No batteries are required for the construction vehicles toys which can ensure 100% safe and eco-friendly The durable material and drop test ensure the long lifespan of the friction car toys. Best gift for birthday, party, Christmas.