Finding a comfortable chair is essential when sitting for long periods of time. This LeatherSoft upholstered contemporary office chair features outer lumbar supports that provide excellent back support. LeatherSoft is leather and polyurethane for added softness and durability. Having the support of an ergonomic office chair may help promote good posture and reduce future back problems or pain. High back office chairs extend to the upper back for greater support. The high back design relieves tension in the lower back, preventing long term strain. The included headrest will take the pressure off of your neck while leaning back. 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. The flip-up arms are great for users who like the option of an armless chair without the hassle of detaching them.