1.Support: Sedentary lifestyle, crossed legs, improper physical movement or body fatigue can lead to spinal posture imbalance and pain. The back stretcher is specially designed to restore the natural curvature of the back and relieve back pressure. 2.Effectively relieve pain and improve posture: The back massager stretcher has 88 plastic needles which relieve back pressure by stimulating the back. And let the spine return to natural lines, help stabilize the spine and improve the flexibility of the back and shoulder muscles. 3. Adjustable Design (4 Levels): This spinal stretcher is designed to be height adjustable, with 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 hold up to 330 lbs, and the foam strip in the middle of the device can provide padding, so you can use it more comfortably. 5.Portable - Good for use at home, at the gym, in the car or on the office chair.