Colour: Light Grey, Stylish and ergonomic sitting stool to keep you active while working, compact design to store under a desk, Designed for comfort with a 9 cm thick seat which can be used to fully sit or lean, Rounded wobble base encourages rocking and swivel movements to strengthen your back and core while working at your desk, 17 cm height adjustment range (47 - 64 cm), 100% post consumer recycled seat cover