PLEASE NOTE: drugstore.com does not currently ship this product to Missouri residents. Orders for this product with a ship-to address located in Missouri will not be processed and customers will be contacted by drugstore.com Customer Care regarding cancellation. The Stamina® Seated Inversion Therapy System is a chair that converts to an inversion table as you invert. So the Seated Inversion Therapy System is easy to get on and off, yet gives you all the benefits of inversion like relief from many forms of back pain, improved circulation, and improved lymphatic circulation. Inversion therapy is a proven, natural, non-invasive method of treating back pain caused by stress and poor posture, and is endorsed and recommended by doctors as therapy to strengthen your back, elongate your spine to relieve pressure on discs, ligaments, and nerve roots.