Portable and easy to use- The Aquapod Water Rocket Bottle Launcher provides hours of outdoor fun and excitement! Cool Backyard Stem Toy- Features a durable one piece design with a built-in pressure release safety valve - Tested for safety and durability! Manufacturered by Aquapod. Teaches educational concepts of science technology engineering math (STEM) and more! For ages 14+ and great Science Kit gift for teenage boys and girls. Outdoor use only. Requires a 2-liter plastic soda bottle and a bicycle pump (NOT included). The Aquapod Bottle Launcher uses science and pressure to propel ordinary 2-liter plastic soda bottles up to 100 feet in the air!