Ergonomic Executive Chair Herman miller USA or equivalent Height 1060mm-1111mm, Width 673mm-787mm, Depth 673mm, Seat (depth 413mm-457mm, height 375mm-565mm, Arm height 152mm-292mm. Colour: Black and grey combination/graphite preferred. Ergonomic, Butterfly suspension back, adjustable lumber support and suspension back, tilt limiter and seat angle, adjustable arm, flex front adjustable, 2.5-inch hard floor or carpet caster with quite roll.