Tourmaline Heat Back Shoulder Posture Postural Brace Support for Pain Relief-Large Size see measurements Description and Material: Material: Functional composite elastic cloth fabric + tourmaline With five self-heating fabric layers, each layer is self-heating Dimensions: L 10 * W 10cm Size: Large- Shoulder:41-44cm (16.1 to 17.3 inches around each shoulder and the brace is 25 inches across, edge of shoulder support to other side to other shoulder Color:Black Package includes 1 Power Health Shoulder Support Far infrared rays powder Nano functional ceramic powder Magnetic Balls Nylon Color: Black Features: Self-heating pad designed for the shoulder . Made up of permanent magnets, the bio-composite heat-chip Moxibustion consists of tourmaline, nano-functional ceramic powder and a special heat sensitive materials. With dual thermoelectric and piezoelectric effect. Forms a resonant magnetic field resonates with the human body. Can effectively improve blood circulation, promote metabolism, and clear the meridians, enhance immunity. Applicable to bone hyperplasia, wrist pain, joint pain and other symptoms of hyperthermia therapy. Wipe Tourmaline cloth part, and then fasten it to the sore. Safe & comfortable to wear. Generally 20 minutes later it will work. 45~60 Minutes of wear per day is recommended. What is Far Infrared? Far infrared (FIR) is a region in the infrared spectrum of electromagnetic radiation Far Infrared is the 'warm' energy in humans, animals and plants, also emitted from sunlight. The intensity of Far Infrared produced by the human body constantly fluctuates. When its intensity is high, we feel healthy and are able to overcome ailments. When the Far Infrared (FIR) begins to decline, we are subject to disease and illness and tend to age more quickly. We can be exposed to Far Infrared heat for hours and it will never cause our skin to burn. Far Infrared heat is completely healthy and safe for all living things. What is Far Infrared therapy (FIR) and what does it do?: Far Infrared Ray are waves of energy, totally invisible to the naked eye, capable of penetrating deep into the human body, where they gently elevate the body's surface temperature (107.6F/42 celsius and above, enables destruction of cancer cells), and activate major bodily functions. History - How Far Infrared therapy came into being: Our bodies radiate far infrared energy through the skin at 3 to 50 microns, with most output at 9.4 microns. Our palms emit FIR energy also, between 8 and 14 microns. 'Palm Healing', an ancient tradition in China, has used the healing properties of far infrared rays for 3,000 years. These natural healers emit energy and heat radiating their hands to heal, much the same as Reiki healers do. Thermal therapy has in fact been in existence for thousands of years, dating back to ancient civilizations such as the Finns, the Romans, the ancient Chinese and the American Indians. Thank you and have a wonderful day!