Giantex Black Ergonomic Desk Task Office Chair Midback Executive Computer Chair 360 Degree Swivel Wheel And Chair Can Run Smoothly On Floor Load Capacity: 264 LBS Tested For:120-150 Kg(264-330lbs) Dynamic State Overall Dimension: 23.2" X 22.4" X34.2"-37.9";Backrest Size: 15.7" X 17.3" Seat Size: 18.1" X 16.5";Adjustable Seat Height: 17.5"-21.2"