describe: Back support belt: Built-in 108 magnets and nano-infrared thermal needle array, the heat is released quickly and the effect is long-lasting. It can effectively help improve blood flow, promote blood circulation, relax muscle fatigue, and relieve joint and back pain. Solid Support: The removable 5-piece solid ABS shaping plate adopts a solid structure, which helps to evenly distribute the pressure on the lumbar spine, secure it firmly and support it reliably, thereby maintaining good posture and achieving a certain slimming effect. It comes with a separate neck brace and contains 12 self-heating magnets. You can choose whether to wear it or not. Warm fabric enhances neck care. Comfortable fabric: High-quality, breathable and soft fabric, comfortable and skin-friendly, suitable for long-term wearing in four seasons, without causing any irritation to the skin. Package contents: 1 piece of orthodontic device