Arksen PU Leather High Back Executive Office Chair w/Metal Base Ergonomic office chair with lumbar support and pneumatic seat height adjustment Seat Dimensions: 19"(W) x 19.3"(D) Back Dimensions: 19"(W) x 22.5"(H), much wider and taller Adjustable Height For Seat: 41" - 45" ; adjustable height Weight Limit: 600LB; easy assembly upon arrival