【Recommended Chair Pad for Those Who Sit for Long Hours】 Sitting for long periods can put a significant strain on your lower back and other areas. This chair cushion uses high-quality memory foam to excellently distribute pressure on your buttocks, providing exceptional comfort. Its three-dimensional structure supports and cradles your buttocks, making it a memory foam cushion that allows you to sit comfortably for extended periods. 【Three-Dimensional Design to Support and Cradle Your Buttocks】 The slight concavity and the sides naturally fit your buttocks, distributing pressure. 【W-Shaped Design at the Front】 Both sides effectively absorb pressure from your buttocks. They naturally conform to your buttocks, gently cradling them for an excellent fit. 【U-Shaped Design at the Rear】 The unique U-shaped structure avoids sensitive areas like the tailbone, improving upon the shortcomings of conventional cushions that can compress the tailbone. It reduces pressure on the tailbone from a seated position, gently caring for the tailbone and providing a comfortable sitting experience. Furthermore, this unique design improves the cushion's breathability, preventing stuffiness even when sitting for long periods. 【Memory Foam Material & High-Quality Product】 Made with memory foam polyurethane, it firmly supports the body, distributes pressure on the buttocks, and will not deform even after sitting for long hours. To provide a high-quality product, it has passed European standard testing (RoHS) and meets safety standards! We deliver excellent products, making it ideal as a gift. (This product's test number: IKS-002) 【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, making it easy to care for. The back is non-slip, so you don't have to worry about the cushion slipping off the chair. 【Product Specifications】 Size: (approx.) 38cm (length) x 45cm (width) x 4-11cm (thickness) Material: Core: Polyurethane (high-quality memory foam) Cover: Surface/100% polyester (breathable mesh material) Back: PVC material (with non-slip and anti-adhesive particles).