The ergonomic ball is an adult seat, it offers a seat alternative for working at home or in the office. It improves the sitting posture and makes the back work while remaining very comfortable. It generally relieves back pain associated with poor work posture. The cover gives this ball a chic interior aesthetic with a soft and pleasant surface. The ball is suitable for a maximum of 100 kg and a size of 160 to 180 cm. The balloon can easily be inflated with a pump or compressor. The balloon is delivered deflated in an individual packaging. The cover is removable and washable.