be amazing toys geyser tube. learn how to trigger an enormous geyser by dropping mentos chew mints into a bottle of soda this package contains one 6 1 2 inch geyser tube and one package of mentos. 2 liter soda bottle not included. recommended for ages 8 and up. warning choking hazard small parts. not for children under 3 years. conforms to astm f963. imported.