Specification: Outer layer: PU(Polyurethane) Inner Iayer : Cotton Inner layer of air inflation: TPU (special soft material) Length of Traction Belt 43.3 inch Length of Extension Belt 7.8 inch Width Before Inflation 5.1 inch Width After Inflation 7.9 inch Waist size: 29-48 inches ( 73cm - 122 cm) Decompression Therapy Relieves the Pain: * Degenerative discs. * Hyperplasia of lumbar vertebra. * Long time driving or sitting. * Scoliosis and spondylolisthesis. * Low back pain caused by obesity. * Chronic and acute back pain. * Prolapsed lumbar intervertebral discs. * Degenerative herniated or bulging discs. * Scoliosis Spinal stenosis. * Trouble sleeping and heavy job. * Sore back from child and elderly care. * Abnormal function of small joints of the lumbar vertebra. Benefits: Strengthen back and core. Stretch tight lower back muscles. Relieve lower back pain and stiffness. Improve nutrient flow on your spine. The belt transfers the weight off your spine. Lift upper body weight off lower back. Reduce pain and pressure on pinched nerves. Decompress lower back joints and spinal discs. Stabilize lower back and improve posture. Decompress the spine allowing for discs to return to normal. Help relieve pressure off pinched nerves. Package Included: 1 x Belt 1 x Air pump 1 x Manual 1 x extender belt Notes: 1. This belt cannot be immersed into water to wash it. 2. Please measure your waistline to ensure that your belt size is correct.