FIR infrared ray energy is a part of the natural light spectrum of sunlight, minus the skin damaging UV, which is why NASA spacecraft have utilized this heat.  Far Infrared therapy and products are very popular throughout Asia and Europe

Far Infrared ray is a form of light energy from the sun. It falls within the same family of Infrared Rays in the light spectrum, but due to its longer wavelengths human eyes cannot see FIR. The energy is ESSENTIAL & BENEFICIAL for all human beings.

FIR has the ability to penetrate, refract, radiate & reflect. The human body can absorb FIR because of its deep penetrating ability. When FIR penetrates through the skin to the subcutaneous tissues, it transforms from light energy into heat energy. The thermal effect within the deep layers of tissues cause blood vessels in capillaries to dilate, promoting better blood circulation, and the heat produced helps to get rid of body toxins and metabolic wastes through sweating.

Infrared sauna saunas use infrared  radiant energy to directly penetrate the body’s tissues a depth of over 1-1/2.  Sauna Dome's energy output is tuned to correspond closely to the body’s own radiant energy wavelength so that our bodies absorb more than 90% of the infrared waves that reach our skin.  A conventional sauna must rely only on indirect means of heat: First, on convection (air currents) and then conduction (direct contact of hot air with the skin) in order to produce its heating effect on us. With Sauna Dome, less than 20% of the infrared energy  heats the air, leaving over 80% available to be directly converted to heat within our  bodies. Thus an IR based system can warm its user to much greater depth and much more efficiently than a conventional sauna, as its energy output is primarily used to  convert energy directly to heat in us and not create excessively hot air that only  heats the skin superficially. This crucial difference explains many of the unprecedented  benefits reported to be available through an infrared sauna. The infrared energy applied in these thermal systems may induce up to 2-3 times the sweat volume of a hot-air sauna  while operating at a significantly cooler air temperature range of 110 to 130 F. vs. 180  to 235F for hot air saunas. The lower heat range is safer for those concerned about  cardiovascular risk factors that might be adversely affected by the higher temperatures encountered in old-style saunas. 

Specifications:

Length: 72 inches
Width: 25 inches
Inside height: 18 inches
Weight: 48 pounds
Uses Very Little Electricity - Voltage 110/60 hz
Super Conductive Heating - 750 watts, approximately 15 cents per hour
Temperature range- 100 F to 160 F with 5 to 10 min. warm-up time
Timer - separate for upper and lower, choice of set time with automatic shut off or continuous time
Control Box- analog with separate controls for upper and lower dome
Standing Dimensions: 1.5 feet x 2.5 ft x 3 ft nestled
Dome Frame: Mahagony Wood, Outer Layer of Naugahyde
BlackCarbon FIR emitting panels
Body Mat: Full body water proof mat
Wheel Rollers on Upper Dome to facilitate ease of entry and exit
Warranty - Sauna Dome - 5 years / Control Box 3 years

Infrared Products - view by name

Lightworks - infrared Leds DPL Cosmetic Light Far Infrared Lamps Vita Mat - far infrared mat Far Infrared Dome - half length Silver Mat - far infrared mat Personal FIR Saunas Classic - ceramic heated wood saunas Core - black carbon heated saunas Core - ceramic heated wood saunas