Scepter* Exe Ergo ASR Office Chair, Black Cloth Upholstered Office Chair, Desk Height, 26 in Dia Composite Base. Seat -Height Adjacent 17-22 in. Waterfall Front, Saddle-Shaped Seat 21 in W X 19 in D X 3 in T. Contoured Backrest Is 20 in W X 23 in H With Lumbar Support.