Features: -Maintain the shape of memory foams. The seat cushion does not deform or collapse to provide long-lasting support and improved comfort. -According to the ergonomic U-shaped contour design, it is close to the hip curve, provides excellent hip joint support and helps you adjust your sitting posture. -Made of mesh, is very breathable and does not cause skin irritation. You can open the cover, remove the memory foam and put the cover in the washing machine to wash. -Perfect for office chairs, sofa chairs, car seats, truck seats, RV seats, hard benches, sports stands, floor sitting and more. -Highly recommended for students, pregnant women, the elderly, office workers, etc. .