①. Ergonomic cushion: 100% memory foam, hollow design, which allows your anus to hang and breathe. It may not cause sedentary heat and humidity. It may help relieve hemorrhoids, lower back pain and sciatic nerve pain. ②. Improve posture: The butterfly cut gives you support and comfort. This cushion can support the natural arch of your lower back to some extent, help you straighten your body and correct your posture. It can protect you from bad sitting posture. ③. High - density memory foam: The size of the comfortable cushion is 45 x 38 x 10 cm. Even if you sit for a long time, it can return to its original shape when you stand up. ④. Easy to disassemble and clean: The cushion cover is made of breathable fabric on the top, with a durable and smooth zipper, which can be easily disassembled and washed in the washing machine. The bottom of the cover uses a protective design fabric, which may not fall off and has a good grip. ⑤. Easy to carry: This chair cushion can be taken with you wherever you go, suitable for mobile workers. Whether you are sitting in a car, plane, train, office chair, restaurant chair or wheelchair, you can sit comfortably anywhere and remote work may be more convenient. ⑥. Color: gray