Ergonomic to the core, Aeron was designed for all types of human bodies. For almost 30 years, we’ve been perfecting it so that it’s not only good for your body, but good for our environment too. 

Aeron offers smarter weight distribution through 8Z Pellicle®, an adjustable PostureFit SL® that supports both the sacrum and the lumbar regions of the spine to empower the natural S-shape, and the high-performing HarmonicTM 2 Tilt, which supports the user’s natural movements and provides a balanced recline.

 https://www.hermanmiller.com/products/seating/office-chairs/aeron-chairs/