made with high quality elastic nylon together with tourmaline cloth and magnet stones. Elastic band with Cloth Tie can ease to wear and fit different size of neck. Far infrared rays emitted from this neck brace will relief pains from Whiplash, herniated disc, meningitis, osteomyelitis, fibromyalgia, and polymalgia rheumatica. Actually, far infrared rays will stimulate the tiny capillaries and veins in your neck, dilate the cells and allow oxygenated blood containing vital nutrients to reach affected area to help reduce pain and inflammation.