I have kept this product in storage, unused. 【Comfortable Sitting】This product is suitable for long hours of desk work, and its special design helps to avoid specific pressure points on the body. As a result, you can work comfortably, and the sitting experience is improved. Size: 41cm (length) X 45cm (width) X 7.5cm (thickness), Main Material: Low-rebound memory foam. 【Ergonomic Design】With an oval hole and a design that curves around the tailbone and thighs, it avoids pressure on the anus and perineum when sitting. 【Excellent Breathability】The air fiber material used has a structure that intertwines like weaving air, providing excellent breathability. In addition, the cushion cover is made of mesh, allowing moisture to escape smoothly, resulting in a non-sticky cushion. You can use it comfortably even when sitting for long periods. 【Durability and Hygiene】The high-rebound material used has excellent durability and is resistant to collapse even after sitting for long periods. The cover and inner can be removed and washed with water. Also, it dries quickly. There is no need to worry about mold, odors, or discoloration. It is a hygienic and safe cushion. 【Wide Range of Uses】It can be used in various places such as offices, cars, and homes. Recommended for pregnant women, drivers, students preparing for exams, those who work at a desk for long hours, and the elderly.