HON VL151 Black Executive Chair, soft leather chair suitable for executive offices and conference rooms, padded armrests support forearms and elbows. This positioning can help eliminate upper body muscle fatigue and stress. 1-touch seat-height adjustment for proper posture. Use the pneumatic lift to instantly raise or lower your chair to the height that's most comfortable for you. Experts recommend that you sit with your thighs and lower legs at a 90° angle and your feet flat on the floor.