GSeat Gel Cushion G-Seat ULTRA Comfort Seat. G-Seat ULTRA Wheelchair Gel Cushion. The GSeat ULTRA is larger and is the the newest G-Seat available. Perfectly suited for any wheelchair, scooter or power chair application with it's thicker design. The G Seat ULTRA is comfortable in any situation. Even ergonomically engineered chairs do not address the point of contact, which is where pressure is concentrated as your body sits on a chair. This leads to discomfort and fatigue. The GSeat ULTRA uses visco-elastic gel and functional design to disperse pressure and improve your level of comfort anywhere you sit.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 and stiffness and numbness in the lower legs. The integrated handle makes the GSeat ULTRA conveniently portable. By using superior materials and functional design, GSeat has developed the premier product for seated comfort.The GSeat ULTRA is ergonomically engineered to enhance comfort while seated. It slopes forward 5 degrees to return your pelvis to it's proper position, reducing lower back strain and maintaining proper lumbar curvature. Dynamic Density Technology combines the benefits of gel and memory foam to create a lightweight cushion that provides superior comfort. The Integrate Handle and foldable design is patented technology that makes the GSeat ULTRA conveniently portable.