A portable sauna-bath jacket includes a one-piece jacket, a hot-air supplier, a cooling-water supplier, and a sequential timing device alternatively controlling the delivery of either a hot air or cooling water stream into the jacket for alternatively warming or cooling a bather for taking a sauna bath...http://www.google.co.uk/patents/US4747408?utm_source=gb-gplus-sharePatent US4747408 - Portable sauna-bath jacket
