Inversion boots counteract the downward pull of gravity and allow user to recover quickly from compression fatigue caused by jogging, aerobic training, stepping, bicycling and weight training. Hanging in the inverted position brings instant relief to many forms of back pain and spasms associated with consistent downward gravitational pull on the spine, discs and muscles. Just a few minutes a day are sufficient to spread apart painful compressed discs. They also stretch back, neck, and shoulder muscles, further increasing flexibility and reducing pain. Requires a horizontal bar to hang from (Chin-Up Bar, power rack, etc.)