Make a tornado in a bottle! It’s simple, hands-on science that’s oddly mesmerizing. Just snap two 2-liter bottles together with the Tornado Tube, give it a swirl, and watch a mini tornado spin to life right before your eyes. It’s a fun way to see vortex motion, air pressure, and water flow in action. Comes in assorted colors, made in the USA, and perfect for ages 6 and up. Warning: may cause uncontrollable “wow, that’s awesome!” reactions.