HON Volt 5703 Black Leather Low-Back Chair, stylish V-shape back design Pneumatic seat height adjusts with one touch. Adjustable tilt angle and tilt tension let you control how you rock and recline. Synchro tilt with tilt lock helps to enhance your comfort while you work. Waterfall seat cushion slopes slightly downward to help reduce stress on your legs. Meets and/or exceeds ANSI/BIFMA performance standards.