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Designed by Bill Stumpf and Don Chadwick Aeron office chair revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit — chest open, shoulders back, pelvis tilted slightly forward. Combining a deep knowledge of human-centered design with cutting-edge technology, the classic Aeron chair is engineered with state-of-the-art adjustability, from the arms, seat height, depth, and recline, to help you maintain the optimal seating posture so you can focus on the task at hand. And it comes available in three chair sizes, offering the most comfort to the largest range of users. With updates that include a more refined tilt mechanism, adjustable PostureFit SL, and the comprehensive support of 8Z Pellicle suspension, the new Aeron performs better than ever before—so you can too. This document relates to Aeron Chairs with a plastic base. Aeron Chairs with a dark mineral (DVP), dark carbon (DCR), graphite (G1), or black (BK) base finish are covered under this document.