Herman Miller Aeron Chair Highly Adjustable with PostureFit Lumbar Support and Adjustable Arms Click below to buy on Amazon: http://www.amazon.com/gp/product/B007UI91C8?tag=sportbest-20 Genuine Highly Adjustable Aeron Tuxedo White Gold Pellicle Color with PostureFit Lumbar Support with Translucent H9 Hard Floor Casters - Large Size C - Smoke Titanium Frame Adjustable Padded Arms Forward Tilt Tilt Limiter The Aeron chair by Herman Miller is simply put the best ergonomic chair you can buy The 12-Year Warranty covers everything that makes a Herman Miller Office Chair--including casters tilts pneumatic cylinders and all moving mechanisms