Description:Material: ABS plastic + sponge pad : gear adjustment : purple, , pink, greenScope of application: cervical spine, lumbar spine, legsSize: 38.5*25.5(16.8)cm, 15.16*10.04(6.61) inchesPacking weight: about 500g (Note: Due to manual measurement, please allow a slight measurement deviation.) : 11 magnets for physical therapy, equipped with 60 massage points corresponding to body points.1. -level adjustment: -level adjustable angle, the back arch angle can be adjusted as needed to meet the needs of waist training.2. Function: Massage the lumbar spine when stretching, and correct sitting posture when sitting.3. Material used: of high-quality ABS plastic, environmentally friendly, tough and tough, pressure-resistant, small and portable, easy to carry4. ing use: There is a soft foam pad in the middle, which can the impact force and provide better protection for the waist Applicable places: Whether lying down or sitting, you can use this massager, suitable for home, office and car. Packaging list:1*Panel,1 * Base,1 * Foam pad,1*User Precautions: Those who are unwell, have recently undergone surgery or have a back injury, please consult a doctor before using this product. Patients with malignant tumors and pregnant women should obtain doctor's consent before use. within 20 minutes after a meal.