An ice sauna is not really a sauna at all. It's a cold room that offers temperatures as cold as -10 degrees F. Extreme cold can offer health benefits just like traditional saunas.
This cold sauna has been called the "Snow Room" and could find its way into luxury hotels as a standard spa offering. It's produced by a company that has developed traditional saunas.
Imagine sitting in 160 degree heat one minute and then jumping into -10 degree cold! It's actually been practiced in northern Europe for along time with claims of better relaxation and improved health.