Have fun building 5 rubber band driven vehicles using ultralight parts - helicopter, airboat, airplane, fan car, and hydrofoil. Oh, and learn some physics on the way.learn how propeller push vehicles forward, and how rubber bands store energy? With this kit you can build an airplane, helicopter, fan car, air boat, and hydrofoil using a unique reversible Brand: THAMES & KOSMOSAbout this item• Fly into physics fun with five models.• Driven by an awesome rubber band powered propeller.• Use ultralight plastic and bamboo parts.• Build a helicopter, fan boat, airplane, car, and catamaran.• Learn how the elastic material stores energy and then releases it to move the models.Rec Age: 8+