Relieves and soothes sore muscles and stiffness. 4 powerful deep-kneading shiatsu massage nodes can relax and relieve pains on your neck, upper back, lower back, shoulders, waist, thighs, calves, foot, legs and arms and back. Built in bi-directional movement control mimics the motion of in-person massage experience, the shiatsu massager will auto-reverse every minute. Adjustable strap allows massager to be secured to a chair, fits perfectly behind your neck or back. Heat function gets your blood flowing circulating and its the ultimate relaxation.