This mini rocket can be launched again and again with the explosive power of bicarb and vinegar. The Fizz Rocket is filled with these 2 household items which create a chemical reaction that makes a build-up of carbon dioxide which shoots out the base of the rocket and shoots the rocket up. Simply put 1 small scoop (included) full of bicarb soda into the rocket base, add a large scoop (included) of vinegar into the base, clip the rocket onto the base then place it on the group and wait for lift-off! Suitable for outdoor use only. Dimensions on stand: 10.5cm tall x 7.5cm wide. Colours include purple and orange (chosen at random). Contains small parts, adult supervision required for children under 14 years of age.