The Playground Classics Balloon Helicopter kit includes 2 latex balloons and 1 plastic propeller inside a peggable blister packet. The latex balloon attaches to the propeller and then deflates with a whistling sound, causing the helicopter to fly. A great introductory STEM toy for science teachers to use for learning about physics and motion, as well as developing kids’ interest in machines, flying, and engineering. • Age Grade: 8+ • Product Dimensions/Weight: 5.7 L x 0.9 W x 8.6 H / 0.7 lb • Inner Pack Dimensions/Weight: 11.2 L x 7.2 W x 5.4 H / 1.6 lb • Made In: China • Batteries not required