The Q-Fiber Body Wrap utilizes Carbon Heat Therapy, which may not feel as hot as other heat therapies, but provides deep penetrating heat which can be very effective on a variety of conditions. Besides easing pain and soreness related to arthritis, shingles, abdominal cramps, and fibromyalgia, it also improves circulation (encouraging blood flow to ailing areas), improves metabolism (cell function), decreases stiffness and relaxes ligament, tendons, and muscles. Infrared heat therapy offers next level treatment for all this. Infrared heat feels comfortable but penetrates as far as 2” into muscles, providing superior deep healing and relief unmatched by other heat therapies. This infrared technology is not only effective, but it is safe to use as it doesn’t give off harmful electromagnetic frequencies (EMF) that can have a negative impact on your body systems. It is made to fit around the waist (up to 44”) to relieve back pain or abdominal cramps, but it also can be wrapped around the shoulders, hips, knees, and ankles, providing 360-degree coverage. Made from a lightweight breathable fabric, this large heating pad provides the comfort of air flow to prevent excessive sweating or skin discomfort. The infrared heat emitted is not only safe and beneficial, but its flex carbon fiber material is fireproof, adding a further element of protection. This heating pad is designed to work with a battery pack - not included. For best results a battery pack that outputs 5 volts at a rate of 3 amps is recommended.