Our 506 Series Task Chairs are designed for multiple applications such as: nurses’ stations, computer terminals, offices and more. Seat height can be adjusted from 21 to 28 inches by a hand lever released, pneumatic cylinder Mounts on a 25 inch composite pedestal for unmatched stability Large seat for superior comfort Backrest edges are protected from cuts, scrapes, and general wear with a vinyl bumper Footrest ring keeps occupant‚s legs from dangling in the air. Optional height-adjustable padded armrests provide comfort and support for ease of writing and keypad operation