Ergonomic Office Chair: The office chair contours to your body’s curves, offering 5 key support points for head, back, lumbar, hips, and arms. The S-shaped backrest helps maintain optimal spinal posture. The 120°backrest recline function helps maintain natural spinal alignment from 8+ hours of work, study, or gaming. The desk chair with 4″ of vertical seat height adjustment, it easily adapts to various desk heights and user statures