Precision Therapy DuoHeat Maxx Portable Far Infrared Sauna Extra Large Large Size: 32in wide x 32in deep x 41in high Low operating cost of approximately $0.05 for 30 minutes use If you are pregnant, you should not use the sauna belt, sauna dome or sauna. Always consult a doctor prior to using excerise equipment. Read directions carefully and follow closely to avoid injury from extreme heat.