VIVA OFFICE High Back Task Chair, Bonded Leather Office Chair with Pneumatic Seat Height Adjustment Ergonomic task chair upholstered in bonded black leather with padded headrest and seat, offering all-day long comfort and support Seating Area Dimension: 20.1"(W)*18.5"(D), Backrest Dimension: 19.7"(W)*26"(H), Adjustable Height(floor to top of seat):17.7"-20.9" Tilt tension control allows rocking back and forth Pneumatic seat-height adjustment; quality PP armrest; 360-degree swivel; smooth-rolling nylon casters; chrome base Maximum weight capacity - 250lbs; one-year free component-exchange; Easy assembly upon arrival