From Kinper - Lumbar Back Pain Relief Device<br>If your spine is not balanced, you will inevitably have problems in your back, your neck, your shoulders and even your joints. <br>Kinper Back stretcher is specially designed to improve posture and relieve back pressure. Restore the natural curvature of the back.<br>Lightweight & compact & portable, Relieve muscle pain and stress！<br><br>Function:Stretch your back and relieve stress. Let the spinal return to the natural lines and correct postural imbalances. <br>Supportive: Suitable for Herniated, Compressed or Bulged Disk, Spinal Stenosis, Sciatica and Chronic Back Pain etc.<br>Strong and hardwearing: Made of very tough ABS plastic, reliable quality and long service life. Can withstand 330LB(150KG) weight.<br>Multi-level design: The back massage stretcher has 3 height-adjustable devices.<br><br>How do you install the tool? (The instructions are in the package)<br>1.Use your knees against the bottom and press the shelf alignment slot with both hands.<br>2.Finger pressure on the lumber panel adjustment gently slide into the appropriate gear.<br><br>Notes:<br> The back stretcher device can bear up to 150kg(330LB).<br>Using the device 1-2 times a day for 5-10 minutes a session.<br>Levels 2 and 3 should only be used after you are comfotable with level 1. <br>If you have physical discomfort and have recently had surgery or a back injury. Be sure to consult your doctor before using the product.