Ergonomic ESD Chair, Weight Capacity 300 lb, Material Fabric, Seat Height Range 21-1/2 in to 31-1/2 in, Color Black, Seat Width 20 in, Seat Depth 18 in, Seat Tilt Backward 6 Degrees , Seat Tilt Forward 6 Degrees , Back Height 16 in, Back Width 17 1/2 in, Base Five-Star Polished Aluminum, Back Tilt Backward 15 Degrees , Back Tilt Forward 11 Degrees , For Workbench Ht. 31-1/2 in to 41-1/2 in, Number of Casters 0, Number of Glides 5, Foot Support 20 in Adjustable Flat Chrome Footring