Developed for Hammacher Schlemmer using technology pioneered by NASA to heal astronauts’ injuries, this device’s 172 LEDs produce safe infrared heat to stimulate blood circulation, relieve swelling, and loosen muscles in the feet. It is the only of its kind made specifically for the feet. A study at Children’s Hospital of Wisconsin in Milwaukee showed the LED technology reduced painful inflammation by up to 37%. Unlike heating pads that only treat just below the skin’s surface, the light from the unit’s 152 infrared LEDs (invisible to the naked eye) and 20 red LEDs penetrates deep into tissue to help relieve the soreness common with plantar fasciitis, neuroma, and tendonitis. Automatically turns off after 20 minutes. The infrared light provides penetrating warmth so safe and comforting, hospitals use it to warm newborns. Plugs into AC with a 6' cord. 16" L x 13" W x 4 1/2" H. (5 lbs.)