Product parameters: Inflation method: hand inflatable Product size: 113*19.5cm extension belt (22*11cm) Withstand pressure: 0.17mpa Duration: After inflation, it can normally be more than 24 hours without air leakage Product material: PU (plastic polyoxyacid rubber) Inflation times: about 20-25 times by hand to fill Suitable for waist circumference: 2 feet-3.6 feet (67cm-110cm) Features: 1. Upright traction: In the past, the traction was usually lying flat. Generally, after the traction, the patient must stand and walk home. The vertebral space that has just been opened will return to the later compressed state under the weight of the human body. The effect is greatly reduced. Upright traction overcomes various drawbacks of previous traction, and can be towed by walking, sitting or standing; 2. Continuous traction and support: continuous traction and continuous support (even for tens of hours), consolidate the traction effect and allow the damaged lumbar spine to get a full rest (the patient obviously feels no pressure on the lumbar spine when using it), compared with previous traction , the treatment effect is more obvious and the cycle is shorter; 3. Large traction force: The air expansion force is large, 25 air expansion columns are evenly distributed around the waist, and stretch at multiple points at the same time to ensure that the vertebral space is opened, and the effect is good; 4. Double function of lumbar and waist protection: while traction treatment, the continuous support belt reduces the pressure on the lumbar spine (the pressure on the lumbar vertebra is less, and the possibility of lumbar spondylosis is less), and the wide belt body can prevent the lumbar spine from leaning forward. Movements that are unfavorable to the lumbar spine, such as side tilt and flashback, are conducive to the recovery of the normal physiological alignment (curve) of the lumbar spine, and play a role in preventing lumbar spondylosis; 5. There are 2 magnets around the waist for medical magnetic therapy.