Steve Spangler Science Extreme Geyser Tube - Science Kit for Kids - Mentos & Soda Lab Experiment - Includes Tube, Candy, & Unique Spray Caps - Chemistry Magic - Classroom STEM Project

This geyser tube lives up to the hype! We used a 1 L bottle of Coke and it was still a huge explosion. Super easy to use and wash well worth to buy, especially as a mom of boys who loved things like this. This is a fun and unique gift.

Reliable tall spout!

This is gonna be great fun with the grandkids! I like the three different nozzles to give us different geyser effects God bless

This thing is amazing! The kids love it. The only thing I don’t like is the red stopper isn’t secure so it could slip out of place before you are ready and drop the mentos.

I got this Coke and Mentos tube for some backyard fun, and it completely exceeded our expectations! The setup was super easy, and the fact that it comes with Mentos included is a big plus. When we set it off, the reaction was incredible—the soda shot way higher than we thought it would! It was such an exciting and hilarious experience, perfect for kids and adults alike. Just make sure to do this outdoors and have a camera ready because it’s definitely a memory-maker. Highly recommend for anyone looking for a simple, thrilling, and educational activity. This little tube packs a big punch!

Fits 7 mentos and has a pressure cap. Very fun for my six year old. We love it. It's easy to use, simple, and does not require supervision.

Works as described!

Cool experiment. Make aure to put the orange top back on before u add the coke. Otherwise it doesnt geiser. Can reuse multiple times