The Marcel Office Chair is a simple, modern ergonomic office chair with a decorative mesh material on the back, a padded foam mesh seat and CA 117 fire retardant foam. The heavy duty black nylon base has dual wheel castors. It features a swivel seat, locking tilt control mechanism, pneumatic seat height adjustment and nylon arms. The arm rests are positioned closer to the back than the standard office chair to help keep your vertical posture and avoid bumping into the desk edge. This all black modern office chair is perfect for a simple home office or an executive's corner office. Weight capacity 250 lbs.