Please feel free to ask any questions in the comments. IKSTAR Chair Pad, Low-Rebound, Chair Cushion, Non-Slip Backing, Breathable, Black [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 low-rebound material, which excellently disperses the pressure on your buttocks, providing excellent sitting comfort. It has a three-dimensional structure that envelops and supports your buttocks, making it a low-rebound cushion that allows you to sit comfortably for long periods. [Three-Dimensional Design that Envelops and Supports the Buttocks] The slight indentation and the sides naturally fit your buttocks, dispersing the pressure on them. [W-shaped design at the front] Both sides absorb the pressure on the buttocks well. It naturally conforms to your buttocks and gently envelops them, providing an excellent fit. [U-shaped design at the rear] The unique U-shaped structure avoids the weaker areas such as the coccyx, improving the shortcomings of the conventional cushion that put pressure on the tailbone. It reduces the pressure on the coccyx from a seated position, gently cares for the tailbone, and provides comfortable sitting. In addition, this unique design improves the breathability of the cushion, making it less likely to get stuffy even when sitting for long periods. [Low-Rebound Material & High-Quality Product] It uses low-rebound polyurethane, which firmly supports the body and disperses the pressure on the buttocks, and will never deform even after sitting for long hours. To provide high-quality products, it has passed the European standard inspection (RoHS) and cleared safety standards! It delivers excellent products, making it perfect as a gift. (This product test number: IKS-002) [Highly Breathable Mesh Fabric & Non-Slip Backing] The cover is made of mesh fabric, which is highly breathable and less likely to get stuffy. The cover has a zipper, so you can remove and wash the cover, making it easy to care for. The back is non-slip, so you don't have to worry about the cushion falling off the chair.