【Posture-Supporting Cushion】Vtesey Seat Cushion This product is brand new and unused. It is sold on Amazon for 2300 yen. 【Cushion that Doesn't Tire You Even After Sitting for Long Hours】The Vtesey chair cushion uses high-quality memory foam, which disperses the pressure on your buttocks, providing excellent sitting comfort. You won't experience pain in your buttocks or lower back even after sitting for long periods, such as when gaming, working in the office, or driving a car. 【Ergonomically Designed】The uneven seat surface is designed to conform to the shape of your buttocks when you sit, providing a secure fit. It distributes weight without concentrating it. This memory foam cushion provides a well-balanced sitting experience. 【Washable Cover & Non-Slip Back】The chair pad 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 the chair. 【Product Specifications】Size: (approx.) 36cm (length) x 45cm (width) x 5cm (thickness). Cover: Velour fabric. Filling: Polyurethane (high-quality memory foam). Back: PVC material (with non-slip and anti-adhesive particles). 【Wide Range of Uses】This cushion is chosen not only as a cushion for chairs at home and in the office, but also as a gaming chair cushion, wheelchair cushion, and car cushion. Placing the cushion on a chair creates a gap at the back, preventing the tailbone from contacting the chair. It is also highly recommended for those concerned about hemorrhoids.