Fashion design, high density sponge ,soft and comfortable cushion ,round chrome base,high quality pump. 1.Professional and durable2. Good quality with beautiful appearance 3. Powerful hydraulic system, chrome baseplate , artificial leater chair surface .4. Hydraulic oil pump,easy up and down and 360 degree swirl5.Backrest can be recline and adjustable headrest6. changable color and accessory . ...