Brand: IKSTAR Features: Breathable, Washable, Non-slip Color: Black Size: 38cm x 45cm Material: Memory foam Used a few times. Please purchase if you understand that this item has been stored at home and will be packaged by an amateur. <<Product Description>> 【Recommended for those who sit for long periods】 Sitting for long periods can put a significant strain on your lower back. This cushion uses high-quality memory foam to effectively distribute pressure on your buttocks, providing excellent sitting comfort. The three-dimensional structure supports and cradles your buttocks, making it a comfortable memory foam cushion for long hours of sitting. (※Note: This product only assists with proper posture and does not correct sitting posture.) 【Three-dimensional design that cradles and supports the buttocks】 The slight indentation and the sides naturally fit the buttocks, distributing pressure. 【W-shaped design at the front】 Both sides effectively absorb pressure from the buttocks. It naturally conforms to the buttocks, gently cradling them for a perfect fit. 【Slightly lowered design at the rear】 The slightly lowered design at the coccyx area gently cares for the coccyx, providing comfortable seating. 【Memory foam material & high-quality product】 Made with memory polyurethane, it firmly supports the body and distributes pressure on the buttocks, and will never deform even after sitting for long periods. To provide high-quality products, we conduct European standard testing (RoHS) and clear safety standards! We deliver excellent products. 【Highly breathable mesh fabric & non-slip backing】 The cover is made of mesh fabric, which is highly breathable and prevents stuffiness. The cover has a zipper, allowing you to remove and wash it. The back is non-slip, so you don't have to worry about the cushion falling off chairs, etc. 【Target users & places】 Recommended for those who do daily desk work, drive long distances, or want to sit comfortably. It can be used in various ways and places, such as seat cushions in cars, office chairs, floor chairs, and wheelchairs. 【Product Specifications】 Size: (approx.) 38 x 45 x 4-11cm Material: Core: Polyurethane (high-quality memory foam) Cover: Surface/100% polyester (breathable mesh material) Back: PVC material (with non-slip and anti-adhesive particles)