The Aeron Chair revolutionized office seating with its defining design qualities: the pioneering 8Z Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sitting position-chest open, shoulders back, pelvis tilted slightly forward. Combining a deep knowledge of human-centered design with cutting-edge technology, the Aeron Chair is engineered with state-of-the-art adjustability, including the arms, seat height, depth, and recline, to help you maintain the optimal posture so you can focus on the task at hand. It’s offered in three sizes, bringing the greatest comfort to the widest range of users. Matte, polished, or powder-coated die-cast aluminum or polymer chassis and base. 8Z Pellicle elastomeric suspension seat and backrest. HarmonicT 2 Tilt mechanism. PostureFit SL hardware or lumbar support. Standard or leather-upholstered polyurethane foam arm pads. 2.5-inch carpet casters or hard floor casters with quiet roll technology. Good condition (no tears / kinks). 41”H x 27”W x 163/4”D.