Luna Task Chair delivers a smart, space-conscious, style-forward design. Expressive lines match any interior style from your boardroom to your office. Breathable, mesh back provides increased airflow. Padded, foam seat creates optimal comfort for all-day sitting. Full-synchro tilt chair features a standard seat slider, three-position tilt lock, center knob tension adjustment and 360-degree swivel. The 2:1 back-to-seat tilt ratio provides ergonomic support as you lean back. Pneumatic-cylinder height adjustment lets you customize height for an enhanced experience. Height-adjustable and width-adjustable arms create a customized seating experience. Five-star base with casters provides smooth mobility. Black frame holds up to 300 lb.