Extra wide padded to provide comfort for the head. This neck harness has heavy duty steel chain which is adjustable with quick release buckle for adjusting the length of the loop. A head harness is often used by athletes to strengthen and define the muscles of the neck. Routine use of a head harness can build muscle mass as well as strengthen neck, shoulder, and upper back muscles. Athletes who regularly use head harnesses for neck strength include wrestlers, boxers, weightlifters, and body builders.