Ergonomically designed black back support cushion. Made with soft urethane foam. Reduces strain on the back and lower back. Lightweight: 489g Easy to carry. Uniform firmness throughout. Adjustable seat depth. Gentle posture correction. Suitable for various chairs such as regular chairs, sofas, car seats, and desk chairs. The cover has a zipper and is removable and washable. The wide lumbar support area accommodates both children and larger individuals. I have two at home, and I'm using one on the sofa. I'm selling this one as I don't need it. No price reduction due to shipping costs. Shipping size: 120 (Japan Post size)