1.Supportive: Sedentary lifestyle, cross-legged, incorrect physical movement or body fatigue may lead to spinal posture imbalance and pain. Back stretcher is specially designed to restore the natural curvature of the back & relieve back pressure. 2.Relieve pain effectively & improved posture: The back massage stretcher has 88 plastic needles that relieve back pressure by stimulating back. And let the spinal return to the natural lines, help stabilize the spinal column and improve flexibility in back & shoulder muscles. 3.Adjustable design(4 Level): This spine stretcher is designed to be adjustable in height, with a total of 4 levels, which can be used by most people. You can choose the most suitable and comfortable height to stretch your back and relieve stress. The higher the height you set, the stronger the stretching force you can get. 4.Durable material:The lumbar support is made of sturdy ABS and environmentally friendly NBR materials. The back stretcher device can bear up to 330lb, and the foam strip in the middle of the device can provide cushioning, so that you can use it more comfortably. 5.Portable - Good for use at home, at the gym, in the car or at the office chair.