Put one of Earth's natural wonders in the palm of your hand! Perform "volcanic eruptions" on the table top, in a bath or even in a glass! It's an awesome science gadget that you can take anywhere you want! Included are detailed instruction with fun explanations and 1 sachet of baking soda. The baking soda included is only sufficient for 1 or 2 eruptions. For unlimited eruption fun, ask an adult to get baking soda, vinegar or a bath fizzer from home. This cool eruption can be performed again and again!

Measures approximately 2" long by 2" wide.