Get back to basics with this black, fabric upholstered executive office chair. High back office chairs extend to the upper back for greater support and relieve tension in the lower back, preventing long term strain. The contoured seat dissipates pressure points for greater comfort. The tilt lock mechanism rocks\/tilts the chair and locks in an upright position while the tilt tension adjustment knob adjusts the chair's backward tilt resistance. Chair easily swivels 360 degrees to get the maximum use of your workspace without strain. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height. You can rely on this durable chair to get you through your work day or keep you comfortable while browsing the internet.