The Balloon Car Racer uses a balloon to propel the race car. Blow up the balloon through the jet port in the rear of the car. Let go of the car and watch it zoom off. The Ballon Car Racer comes with 2 balloons and they can be replaced with standard balloons when they wear out. The balloon car racer is available in 3 colors and shipped based on availability. Ages 8 and up. This item contains small parts not suitable for children under 3 years.