Gain convenient seating set on casters with the Pneumatic Stool. With an adjustable height it's easy to get comfortable.Comfortable, long-wearing vinyl upholstered stool with generously cushion seat for all day comfort. Stool featues a 5" pneumatic lift to handle a variety of tasks at different work surface heights. Full 360 degrees swivel. Stable 23" diameter 5-star base with 2" swivel casters. Some assembly required.