The first thing to do is assemble the helicopter. It is easy to put together and you get to practice some basic constructions skills too then it's time for the real fun. Blow up the balloon, pinch it shut and attach the hub on the end of the balloon to the blade assembly. The gases escaping from the balloon force the blades to rotate. The rotating blades, in turn, drive the air downward to provide lift and propel the helicopter high into the air. Awesome package includes:- 1 colored balloons (24 sets)- 2 colored rotors (12sets)- 3 connectors (12sets)description :- Item: Classic toy - model: Balloon helicopter- condition: 100% new- perfect for parties and Christmas stocking fillers - instruction manual is included - can be used indoors or outdoors.