Freely adjustable structure: The back massager is supported by an ergonomically designed, curved panel that adapts to the human spine to effectively relieve lumbar discomfort caused by prolonged sitting and other causes and return the lumbar spine to its normal curve. The upper limit of the air pocket's load capacity is 168 kg. Lightweight and durable: The lumbar cushion is made of PP and strong magnets, and the air pocket is made of TPU, which is not easy to deform or break. It weighs 0.58 kg and is easy to carry and store. Multifunctional massager: multi-stage lumbar support, back massager, shoulder massager, bed use, acupressure, back massage in a chair or car, back stretcher for lumbar pain, lumbar support for chronic pain, slipped disc, sciatic nerve, spinal canal stenosis and posture correction. There is an air pocket on the back of the lumbar cushion for height adjustment. You can manually adjust the setting, squeeze the air pocket to inflate it, push up and stretch the waist, and deflate it with one click to reduce pressure on the meridians. When the pain point is reached, you can stretch it at any time to combine it firmly. The lumbar cushion corresponds to the distribution of acupuncture points in the human body, with a total of 112 acupuncture points, including 8 points for magnetic field therapy and 104 3D acupuncture columns. For back pain, adjust the back stretcher to a comfortable height, lie flat on the spine board and feel the energy of the acupuncture. Relieve back stiffness, promote blood circulation, relieve back pain and muscle pain, 10 minutes daily. Beginners can add a soft cloth or towel at the beginning to avoid injury. Instructions for use: Lumbar cushion with air pocket for height adjustment. Adjust manually, press the air pocket, stretch the waist and back, deflate, reduce pressure on the meridians. Lightweight and durable: The lumbar cushion is made of PP, strong magnets, silicone and TPU, and is difficult to deform or break. It weighs 0.58 kg, making it easy to carry and store. Acupuncture and pain relief: The lumbar cushion corresponds to a total of 112 acupuncture points. Strengthen your back extensors for ten minutes a day to relieve back pain. Versatile massager: Multi-level lumbar support, back massager, back massage in a chair or car, back stretcher for back pain, slipped discs and posture correction. Freely adjustable structure: The back massager is ergonomically designed to effectively relieve lumbar discomfort. The air pocket has a load limit of 150 kg.