Plunge pools are intended mainly for the sauna services as a form of cooling the body after warming the surface of the body in a sauna.
Pools are connected to the flowing supply of cold water (cooling bath) or have their own circulating water technology (cooling pool).
The intention is to have the coldest water in the pool in accordance with the principles of sauna rules.
There are skimmer pools for private clients and grooved pools for public sector.
The optimal water temperature is from 8 to 12 °C.