Ergonomic Coccyx CushionThis ergonomic chair cushion for office is scientifically designed to provide you with firm support and help you relieve pain and pressure from your back, sciatica, back and legs and correct your sitting posture, ensuring you comfort in daily life.< /p> Non-deformed memory foam cushion. Memory foam filling, it will not deform even if you sit for a long time, it will recover and return to its original shape immediately. UniversalThis seat cushion can be used anywhere. It is suitable as an office chair, dining chair or wheelchair. It is ideal for traveling in the car, plane, train or simply as a booster seat. Thanks to the practical bottom, it does not slip. Size: 45*37*7 cm Note: The data is manual measurement, please allow 1-10 cm error, due to the difference between light and screen, there may be color differences, the actual goods in kind shall prevail.