HON Work Chair, 28-3/4 by 25-3/4 by 42-3/4-Inch, Black Nucleus work chair brings a clean, slender profile to office seating without sacrificing comfort An advanced suspension material called ilira-stretch NRAM forms the internal seat structure, delivering immediate, supportive comfort without the bulk The cushioned seat distributes your weight evenly to minimize pressure points for improved circulation and reduced muscle fatigue