Body Solid GIB2 Inversion Boots Pair of 2 inversion boots counteracts the downward pull of gravity Gravity boots help reduce back pain, spasms, and muscle fatigue Helps fight compression fatigue from jogging, aerobics, cycling, and other exercises Helps spread apart compressed discs and stretch back, neck, and shoulder muscles Thick, contoured support pads for comfort; includes extra pads to accommodate users of all sizes