Every component of the Aeron chair is designed to maintain proper alignment and balance – no matter the sitting position. The patented PostureFit SL provides adjustable spinal support that helps your body mimic its strongest posture: standing, chest open, and pelvis tilted slightly forward. From upright and active to a deep recline, Aeron’s state-of-the-art Harmonic 2 tilt mechanism moves with you naturally and supports your entire range of movement. Fine-tune Aeron even further with its fully adjustable arms, seat height, depth, and recline.