Pull-Back Car Toy Is Made Of Plastic. The Body Of The Pull Back Car Is Smooth And Polished, Without Burrs And Barbs, Allowing Kids To Play In Their Hands. High Elastic Rubber Wheels Make Strong Friction With The Ground, Which Will Get The Toy Car To Cross Over Small Objects Easily. No Batteries Are Needed, Just Simply Pull The Car Then Let Go And Watch The Pull Back Car Accelerate Across The Floor. Telescopic Pull Back Cars Just Press The Vehicle Down And Pull It Back, Then Release Them Quickly, Then The Vehicle Will Automatically Go. Our Pull Back Cars Are A Great Gift For Children.