Boss Black Task Seating

One touch adjustment instantaneously raises or lowers chair 5 star nylon base allows smooth movement Tough durable plastic protects seat back and bottom from tears Dimensions: Seat Size: 17-inch W x 16-inch D Seat Height: 16.5-inch - 20.5-inch H Overall Size: 22-inch W x 22-inch D x 29.5-inch - 33.5-inch H