Acupressure Spine Roller : (Magnetic Deluxe) This device is useful for back pain, back discomfort, spine trouble and muscle fatigue, etc. Tone up of spinal nerves and revitalizes total body, removes stiffness. It can also be used as a body massager. Office employees may take use daily for 5 minutes to avoid unnecessary backache. Its deluxe shape specially designed for firm grip and full pressure.