The Aeron Chair revolutionized office seating with its pioneering 8Z Pellicle suspension material and patented PostureFit SL back support. Engineered for adjustability (arms, seat height, depth, and recline) and offered in three sizes to fit a wide range of users. Breathable suspension, Harmonic Tilt for smooth recline, fully adjustable arms, and composed of recycled materials; up to 91% recyclable. (Source: Herman Miller product page.)