Aeron Chair Aluminum Frame Leather Arms by Herman Miller - Home Office Desk Task Chair Fully Loaded Highly Adjustable with Classic Dark Carbon Mesh PostureFit Lumbar Back Support - Large Size C Authorized Herman Miller Retailer and Service Center - 12 Year Factory Warranty is INCLUDED! Genuine Highly Adjustable Aeron - AE213AFCPJCDBB3D012109 Aeron Large Size C - Posture Fit, Graphite Frame, Leather Arms Aeron Large Size C - Posture Fit Back Support, Graphite Frame, Adjustable Leather Padded Arms, Forward Tilt, Tilt Limiter The 12-Year Warranty covers everything that makes a Herman Miller Office Chair--including casters, tilts, pneumatic cylinders, and all moving mechanisms. The Aeron chair by Herman Miller is, simply put, the best ergonomic chair you can buy.