The Balloon Helicopter is easy to assemble and fun to use. Inflate a balloon and attach the rotor blades tot he opening. Let go of the balloon and watch the helicopter fly across the room. The Balloon Helicopter has a special valve that makes it whistle as it flies. The Balloon Helicopter includes: 2 Balloons 3 Rotor Blades 1 Mouth Piece 1 Blade Assembly Assembly Instructions Ages 8 and up. Warning: this product has small pieces not suitable for children under 3 years.