This fabulous build-and-play kit allows you to build a car that is powered purely by air! Completely eco-friendly! Children will gain valuable insights into propulsion via compressed air! The car requires no batteries, has no motor, is easy to build and will travel up to 50 metres. Assembly and operation is a breeze! A pump-up bar with a pressure meter is built into the car for easy operation. This meter measures the volume of compressed air. When the air chamber is full, you can release the compressed air, driving the vehicle up to 50 metres in 35 seconds. The car is fast and furious fun that requires no batteries or specific weather conditions to limit its usage. For Ages 10yrs. Pack Dimensions (cm): H: 19 W: 32 L: 11