I am selling one because I have two. This one is unused. I believe it's the model just before the one in the image. I think so because the location of the Muatsu logo is different. Showa Nishikawa Muatsu Cushion [Flat] Round Cushion, Cushion for Chairs, Backrest, Seat Cushion, Square, Round Seat, Hole, Concave-Convex Structure, Pressure Distribution, Antibacterial, Deodorant, Breathable, 7cm Thick, 40x40cm, Side Fabric Washable, Anti-mite, Gray, MuAtsu Cushion Flat, New Model ◆MuAtsu Cushion Flat◆ A cushion from the Muatsu series. It can be used as a square cushion or placed against the back. The center part can be removed and used as a round seat cushion. The Muatsu dots comfortably support the back and lower back. ◆Approximately 7cm thick◆ With a thickness of about 7cm, you won't easily feel the bottom, and your buttocks won't hurt. It's durable for daily use and has a comfortable firmness. ◆Unique Concave-Convex Structure◆ A unique concave-convex structure developed with inspiration from the shape of the tip of a space rocket. The concave-convex structure distributes body pressure radially, reducing the burden. Also, because it supports the body with "dots," the contact area is small, and it does not easily impede blood circulation. [Features ① Does not easily impede blood circulation] Due to the unique structure that supports with dots, the contact area with the body is reduced, making it less likely to impede blood circulation and reducing the burden on the body. [Features ② Distributes body pressure] The concave-convex structure distributes the body pressure it receives in a three-dimensional and balanced manner. The body is stabilized, and a comfortable sitting experience is maintained. [Features ③ Structure that efficiently releases moisture with the concave-convex shape] The concave-convex structure efficiently releases moisture. Size: 7 x 40 x 40cm Side fabric: 100% polyester (Polygiene processing, anti-mite processing) Filling: Urethane foam Show less