Gel Seat Cushion,Double-layer Thick Egg Gel Seat Cushion With Non-slip Cover,Multi-Use Seat Cushion Super Breathable for Car, Office Chair, Wheelchair or Home,Pressure Pain Relief,Resilient& Durable:Elastic self cooling gel material maintains its original shape durably. And it won't lose its support even after long time use. When used for long sitting periods, it will continue to provide the comfortable soft support all the time.