A fun and practical toy set that children can take with them anywhere. Exciting mini collection for building games. The trucks are friction driven, which means they don't need a battery, they accelerate on the ground when released.Perfect for both indoor and outdoor play. The trucks are sturdy and durable.The set is recommended for ages 18 months and up.Package contents:1 tipper truck1 cement mixer1 bulldozer1 tractor with detachable trailer< /span >