Genuine OEM Herman Miller Aeron Remastered Adjustable Lumbar Support. Designed specifically for the Aeron Remastered model (Size B) – not compatible with Aeron Classic chairs. Fully functional in good condition. No flaws or defects. Genuine OEM Herman Miller part (Size B). Adjustable lumbar support system. Compatible with Aeron Remastered chairs only. Clean, fully functional condition. Please verify compatibility with your chair before purchasing. Feel free to message with any questions or if you need help identifying your Aeron model.