Featuring a contoured S-shaped design, the RENPHO Neck And Back Massage Seat Cushion follows the curvature of the human spine for a more effective and comprehensive massage from neck down to waist and hips. In fact, the massage seat combines various massaging action such as shiatsu, kneading, rolling and vibration as well as heat function to provide a spa-like massage experience that helps eliminate fatigue, stress and muscle aches. All in the comfort of your favourite seat at home, in the office or anywhere else.