The GSeat Gel Seat Cushion Features: Center relief groove eliminates soft tissue compression and suspends the tailbone (coccyx) , which eliminates direct pressure on the spine. Gentle forward slope enables proper lumbar curvature while seated. Gel disperses pressure more effectively than foam, relieving pressure points and enhancing circulation. The GSeat incorporates the premier material in gel technology, which maintains its shape and cushioning properties better than any polymers and foams currently on the market. It provides relief from the stressful affects of being seated for long periods of time, like low back pain, stiffness and numbness in the lower legs. One-year limited Warranty from the manufacturer. The most innovative development of the GSeat is an integrated handle that folds the seat in half when you carry it making the GSeat conveniently portable. There is no other product like it!