BestOffice PU Leather Mid-Back Mesh Task Chair Office Desk Task Chair overall dimensions:37.4"-40.5"(H)*23(W)*24(D) Seat Size: 20.1"(L) x 20"(W) Seat height: 17.7 - 20.9" adjustable height Back size: 19.5"(L) x 18.3"(W) Qty:2 PCS