lt is made of high quality stainless steel, the built-in system will help prolong itUseyour time.We only use the first-class materials coupled with considerable design and the highest safety standard on all our sauna heater.You will be satisfied with the noticeable effects on pain relief, weight control. skin stimulation and stress reduction due to anincreased blood circulation got from Sauna Bath. It is the first choicefor modern house, hotel. health club and leisure places.