Herman Miller Aeron Chair Highly Adjustable with PostureFit Lumbar Support and Adjustable Armsbr Click below to buy on Amazon: 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 br The Aeron chair by Herman Miller is simply put the best ergonomic chair you can buy br The 12-Year Warranty covers everything that makes a Herman Miller Office Chair--including casters tilts pneumatic cylinders and all moving mechanisms