Sit and Decompress is a system designed to relieve pain for those with various low back injuries and conditions. This includes sciatica, scoliosis, degenerative disc disease, bulging or herniated discs, an uneven pelvis, arthritis, and spinal stenosis. The Ultimate Back Stretcher is what Sit & Decompress has dubbed their dangling doorway harness, which is intended for spinal decompression and a 20% to 25% increase in disc space. To use the system, the harness loops over the narrow, protruding front posts of a doorway pull-up bar (sold separately) and then velcros and buckles around the chest / upper ribs. By spending approximately 5 minutes a day in the harness, you can also improve your back's range of motion and decrease stiffness. Some users have even found that Sit and Decompress helps with posture, possibly even correcting the height exaggerations of those who are 5'11" but claim to be 6'0" on dating profiles. Despite not being officially marketed as a sex swing, the Sit and Decompress dangling doorway harness can be used for a variety of purposes, depending on the user's preferences.