The Leitz Ergo Cosy Active Sitting Ball encourages back and core muscle movement, improving posture and relieving back pain. Ideal for use as a desk chair to keep you active while you work, a yoga ball or for back stretching, physiotherapy and gym ball workouts. Quick and easy to inflate, it comes with a hand pump, 2 plugs and has a durable carry handle making it easy to carry from room to room. With its minimalist design, this stylish exercise ball chair will improve health and wellbeing by creating the perfect active working set-up.