【Memory Foam Material - Comfortable for Long Hours of Use】 Made with genuine memory foam, this cushion provides exquisite support, evenly distributing body pressure and minimizing strain even after sitting for extended periods. It effectively alleviates lower back and buttock pain while maintaining a natural posture, ensuring comfort during long hours of sitting. Perfect for desk work or driving, enjoy a comfortable seating experience! The strong support prevents deformation even after prolonged use. It resists wear and tear, ensuring long-lasting use. 【Ergonomic Design - Correct and Stable Posture】 The buttock cushion features an ergonomic "W" shape design, providing support and comfort while reducing pressure on the lower back, waist, and buttocks, thereby improving posture. The backrest cushion fills the gap between the body and the seat, supporting the lower back and promoting a stable posture. It evenly distributes and absorbs stress from the lower back to the back, minimizing the load on the spine. 【Breathable - Comfortable Seating】 The cushion has a hole in the center, allowing for airflow and excellent breathability, preventing the buttocks from becoming stuffy even after prolonged use, ensuring comfort even on hot days. The underside is non-slip, so you don't have to worry about the seat cushion slipping off the chair. Enjoy exceptional comfort, freeing you from stress and discomfort during work, and helping you maintain concentration. 【Anti-Slip Band & Washable Cover】 The removable covers for both the seat cushion and the back cushion can be easily removed with a zipper when dirty. The covers are machine washable, allowing you to keep them clean. It's hassle-free and keeps you comfortable at all times. The backrest has an anti-slip band, allowing you to adjust the height to fit your height when fixing it to the chair. The seating comfort is outstanding, supporting your daily life comfortably. 【Seat Cushion & Backrest Cushion 2-Piece Set】 This 2-piece set provides comprehensive support from your lower back to your buttocks. By combining the back cushion and seat cushion, the seating comfort is improved, and a sense of unity is created. Suitable for those who work long hours sitting, it's perfect not only for long-distance drivers but also for those who work at a desk. It makes a great gift for birthdays, Mother's Day, Father's Day, Valentine's Day, and other special occasions.