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. With the multidirectional stretch of ilira-stretch M4, the back flexes four ways to put instant lumbar support right where you need it. Chair functions include pneumatic seat-height adjustment, seat glide mechanism, 360-degree swivel and dual-action synchro-tilt. Work chair supports users up to 300 lb.