Description: 【100% HIGH DENSITY MEMORY FOAM】: Keep memory forams' shape. The seat cushion will not deform or collapse, so as to provide long-lasting support and improved comfort. (Note: The softness of the pillow will vary slightly with temperature.) 【PERFECT U-SHAPED DESIGN】: According to the ergonomic U-shaped contour design, it is close to the hip curve, provides excellent support for the hip joint, and helps you adjust your sitting posture. With a coccyx resection design, it helps to increase the pressure on the coccyx, which helps relieve pain from prolonged sitting. .