MULTI-FUNCTIONAL OFFICE CHAIR-Features adjustable headrest, 4D flip armrest, adjustable lumbar support and height adjustment, 3-position tilt lock, all included in this chair. We believe this classic and modern chair will enhance your comfort to a new level. We focus on the chair so you can focus on your work study game! BREATHABLE MESH OFFICE CHAIR-Highly breathable self-supporting mesh composite is weaved to offer ventilated comfort for all seasons. Highly durable in strength, it has been rigorously tested for 120,000 cycles/times under BIFMA standards. The waterfall seat design also helps reduce stress on your legs