Join heppu in the sauna! Nothing like this has ever been seen on the sauna stove. Fit the guy firmly between the stones in the heater and tilt it slightly backwards. When the heater is warm enough, the guy hides in his own hole, from where he bounces to delight the sauna bathers whenever he gets cold steam water on his neck. Its operation is based on temperature difference, so the hotter the rock and colder the steam water, the more briskly and cheerfully Heppu bounces. Perfect for kids and adult bathers alike!