The first picture is a product picture, the other pictures are sample displays Note: The actual packaging box may be different from the one shown in the picture Description: Material: ABS plastic + sponge pad Level: Three gear adjustment Scope of application: cervical spine, lumbar spine, legs Maximum acceptable Packing size: 400 * 250 * 30mm / 15.75 * 9.84 * 1.18 inches Package Weight limit: 180 catties =200 pounds Feature: 1. Three levels of adjustment: three levels of adjustable angles, the back arch angle can be adjusted as needed to meet the needs of waist training 2. Function: Equipped with 88 massage points corresponding to the body acupoints. It can massage the lumbar spine when stretched, and can correct the sitting posture when sitting. 3. Material used: made of high-quality ABS plastic, environmentally friendly, tough and tough, pressure resistant, compact and portable design, easy to carry 4. Matching use: There is a soft sponge pad in the middle, which can cushion the impact and provide better protection for the waist 5. Applicable places: Whether lying down or sitting, you can use this massager, suitable for home, office, car. Packing list: 1 *panel 1 *base 1 *sponge pad 1*use manual Precautions: People who are unwell, who have recently undergone surgery or have back injuries, please consult a doctor before using this product Patients with malignant tumors and pregnant women should ask their doctor for permission before use Do not use within 20 minutes after meals