Upgraded Design for Full Body Relaxation - The  EZBack shiatsu back and neck massager with heat adopts a curved shape ergonomic design, 4 inches longer than an ordinary massage pillows. This ensures better support and coverage for your neck and back. Effortlessly target your neck, back, shoulders, legs, calves, or feet whether you are at home or in the office. Note: It requires a plug-in power source and is not rechargeable.