Ideal for party bags and stocking fillers these fizzy mermaid shell are great for any child that is interested in mermaids. Inside each fizzy mermaid shell is a mermaid waiting to escape and be played with! To unleash the mermaid from within, simply remove all packaging and drop the fizzy shell into a bathtub, basin or large jar filled with cold water. Watch in amazement as the shell fizzes and starts to dissolve, revealing the hidden mermaid toy, once all the shell has fizzled away, remove the toy from the water and have hours of fun playing with it.