FIR stands for far infrared and it is not like tuning your radio into kfrc which is a pin point spot on the spectrum. FIR (Far-Infrared-Sauna) is a wide band of the spectrum and I have asked many times what frequency is this tent tuned? If that money grubbing B##ch would show her research papers sufferers could build their own "tents" as leds in bulk are cheap and can be tuned to her "therapeutic" level. Morgellons is systemic it is in your blood.... how FIR (Far-Infrared-Sauna) leds that primarily produce heat cleanses the blood is beyond me..... and anyone that knows what we suffer through would release this info for free so the poorer sufferers could get relief. Not a $3000 placebo mind screw .......which if you look for that quack on the web you will not find 1 cure.... just like Miracle-Mineral-Supplement that made people feel so great until they got so sick not knowing it's aerobic which morgs love... why do you think it comes out of every orifice? people please research before you spend all your money on these guru's cures..... they don't even know what it is yet .....it's like having someone fix your tractor over the phone..... if you have the $$ and feel that this helps you god bless you...... please email when you are feeling your best