Neck MassagerNECK MASSAGER: Our manual neck massager is equipped with six roller massage balls that can rotate 360with this neck and shoulder massager, you can press, squeeze and knead to release the tight, stiff and painful muscles of your neck, shoulders or legs, to help improve blood circulation and release your fatigue, thus improving your sleep quality and maintaining good body energy. MASSAGERS FOR NECK AND BACK: manual massager, massage strength can be