“Brought for excersice via physio, when standing on it with one foot there is no wobble my foot is flat to the floor, it advises you increase air volume with needle pump provided, unfortunately you don't actually get the pump you have to make an additional purchase. So I am disappointed with this purchase. Sissel have been contacted and they suggested I purchase the needle pump. All instructions and information referred to "included " but alas no pump offered. If your just buying for sitting on then I'm sure you'd be very happy.”
