Wowee.., these sure are more fun than a barrel full of monkeys! Made in Germany by Dieter’s Spielzeug, they’re made of lightweight plastic, and are equipped with a balloon for propulsion. An old concept, that never gets old. Blow up the balloon and let ‘em rip. On the road or on the water, these are real thrillers. They measure: boat 7 ¼”, the race car 6”. We sell ‘em as a set only, in misc. colors, and if you want to go to the races, either on water or land, you’ll just have to buy several sets.