This chair by Office Star® features a contemporary design and robust construction. Ideal for home offices. • Contour Seat and Back with Built-in Lumbar Suppor• One Touch Pneumatic Seat Height Adjustment• Back Height Adjustment• Seat and Back Angle Adjustment• Adjustable 20" Diameter Foot Ring• Heavy Duty Nylon Base with Dual Wheel Carpet Casters Contour Seat and Back with Built-in Lumbar Suppor One Touch Pneumatic Seat Height Adjustment Back Height Adjustment Seat and Back Angle Adjustment Adjustable 20" Diameter Foot Ring Heavy Duty Nylon Base with Dual Wheel Carpet Casters Assembled Dimensions : 19"W x 25"D x 46"H Easy to assemble Work Smart™ 26.50-in x 18.50-in Black Ergonomic Drafting Chair