The Electric back is a high end back compression brace that accommodates any of the conductive patches via hook and loop Velcro. Position the patches where needed, and move at will. If not utilizing the electrotherapy, remove the patches and use this brace as a full functioning active back brace. The electric back can accommodate 2-4 conductive patches. This allows for both TENS channels to be used at once in one brace utilizing two double strip patches. One electrode included.