【New Ergonomic Seat Cushion - For a Beautiful Silhouette】 This new cushion is designed based on natural physiological arcs, constantly maintaining the spine's S-curve. It adopts a unique design that naturally shifts the body's center of gravity backward when sitting. The spine is naturally straight, promoting proper alignment. The cushion naturally indents, firmly fitting the buttocks and protecting their natural curve. Simply sitting on it helps maintain a natural forward-leaning posture, naturally straightening the back, so with prolonged use, your buttocks will lift, and you'll achieve a more beautiful silhouette. (※Note: This product only assists in proper sitting posture and does not correct sitting posture.) 【Excellent Breathability, Prevents Stuffiness】 The cover's surface uses double-mesh fabric, and the synergistic effect of the hollow design of the inner material and ventilation holes reduces the feeling of close contact with the body, providing excellent breathability. This prevents the discomfort of body heat accumulating in the seat cushion, allowing for cool and comfortable use even in summer. Because it doesn't easily accumulate moisture, it's also less prone to mold, so you don't have to worry. 【Three-Dimensional Structure that Wraps and Supports the Buttocks】 The arc-shaped sides gently fit the buttocks, distributing pressure. The W-shaped design of the front edge gently fits the thighs, reducing pressure on the thighs for comfortable sitting. 【Highly Breathable Mesh Fabric & Non-Slip Backing】 The cover is made of mesh fabric, which is breathable. The cover has a zipper, so it can be removed and washed, making it easy to care for. The back is non-slip, so you don't have to worry about the cushion falling off chairs, etc. 【Applicable Places & Quality Guarantee】 Our memory foam cushion is perfect for those who sit for long periods and for drivers! It's also suitable for chairs in offices and kitchens, airplanes, wheelchairs, sofas, and gymnasiums! After market research, this memory foam cushion is the most suitable type of cushion for Japanese people. Furthermore, the size is (approx.) 40cm long x 36cm wide x 3-10cm thick, making it very easy to carry.