This contemporary office chair features outer lumbar supports that provide excellent back support. Finding a comfortable chair is essential when sitting for long periods at a time. Having the support of an ergonomic office chair may help promote good posture and reduce future back problems or pain. High back office chairs have backs extending 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 offers a comfortable rocking/reclining motion. The free range motion is great for taking a quick break from typing for phone calls and relaxing. 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.