The "Pocket Rocket" is a rocket to be fired from a cola bottle. To do so, simply put a mentos into a cola bottle and seal the bottle up with the rear end of the rocket! The bigger the bottle, the bigger the fun!The rocket is hollow, ensuring light weight, while the still thick walls of the rocket provide the durability to be fired multiple times.WARNING: May lead to injuries, if handled incorrectly. Do not aim at animals/humans. Children have to be supervised.