The Tosi™ Collection stands alone as the authentic full spectrum sauna, setting it apart as a one-of-a-kind offering. In an industry where numerous brands claim to provide full spectrum saunas, Tosi™ truly delivers on this promise. What makes our heaters revolutionary is their unique combination of mid and far infrared technologies, complemented by advanced LEDs that emit near infrared light. Together, these components produce the complete spectrum of infrared wavelengths. By providing access to the entire spectrum, you can enjoy the maximum benefits of each wavelength. Say hello to Tosi™, and bid farewell to toxins.