These balloon-powered helicopters are great for outdoor or indoor fun (if you have high ceilings). Simply snap the blades on the hub, place the balloon on the collar, inflate the balloon, and you're ready for lift off! When you release, air travels through the blades, causing them to spin. Lift is created and off it goes! We've gotten these to fly over 20 feet high. Blow up the balloon again to relaunch. Colors may vary.