Science in action! Heat from your fingers causes the colored liquid in the chamber to "boil".
Packaged with pen stand on peggable blister card measuring 4" W x 7.5" H (10 x 19 cm). Age 7+. Note - NOT A TOY!
Boiler chamber made of glass.
Just A Lil' Toy Store
Postal Box 222
Arcadia, Florida 34265