Our Magnetic Thoracic Neck Wrap is constructed of a flexible micro-mesh fabric that is washable (after removing the magnetic pads). This wrap is not intended to be used as a brace. This neck wrap is for someone suffering lower cervical and upper back discomfort. It extends over 7" down the spine. Our Thoracic Neck Wrap contains Velcro removable pads with powerful neodymium magnets in each pad. The removable pads can be used anywhere on the body. The size is 23" x 7" and contains 20 neodymium magnets (manufacturers gauss rating of 12,000-12,300/surface output 1,500-2,000 each).