High-quality foam, exceptional comfort: This seat cushion is filled with high-quality, resilient foam that achieves an ideal balance between softness and support, helping to relieve pressure and discomfort on the hips. Even with prolonged use, it resists sinking and deformation. The D-shaped design fits perfectly with your chair, making hard, uncomfortable seats a thing of the past. Genuine silicone non-slip bottom: The fully covered bottom is equipped with genuine silicone, providing superior grip compared to ordinary plastic materials. The silicone is softer, non-sticky, and will not fade or scratch the chair. Comes with two pairs of 15-inch detachable straps, which can be added for extra stability if needed. Thoughtful craftsmanship: The zipper is fully covered with a protective flap to prevent scratching the chair. Dense stitching and neat edging reflect durability and attention to detail.