Specifications: Outer layer: PU (polyurethane) Inner layer: Cotton Inflatable inner layer: TPU (special soft material) Leash length 43.3 inches Extension strap length 7.8 inches Inflated front width 5.1 inches Back inflated width 7.9 inches Waist size: 29-48 inches (73 cm - 122 cm) Decompression therapy relieves pain in: * Degenerative discs. * Lumbar hyperplasia. * Driving or sitting for long periods of time. * Scoliosis and spondylolisthesis. * Low back pain caused by obesity. * Chronic and acute back pain. * Lumbar disc herniation. * Degenerative disc herniation or bulging. * Scoliosis spinal stenosis. * Difficulty sleeping and heavy work. * Back pain from caring for children and the elderly. * Abnormal function of lumbar facet joints. Benefits: Builds back and core strength. Stretch tight lower back muscles. Relieve lower back pain and stiffness. Improves nutrient flow to the spine. The belt transfers weight from the spine. Lift the weight of your upper body off your lower back. Reduces pain and pressure on pinched nerves. Decompresses the lower back joints and discs. Stabilizes the lower back and improves posture. Decompress the spine and allow the discs to return to normal. Helps relieve stress on jittery nerves. Packing list: 1 x belt 1 x air pump 1 x manual 1 x extension strap Note: 1. This belt cannot be immersed in water for cleaning. 2. Please measure your waist to ensure your belt is the correct size.