· 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· ADJUSTABLE LUMBAR SUPPORT: Curved back support to keep your back and your body properly aligned. Including adjustable lumbar support, so you can move up and down to the desired height according to your needs· 2 in 1 TILT LOCK& HEIGHT CONTROL: Maximum 120° tilt with 3 lock-in recline positions and adjustable tension, experience enhanced ergonomic comfort that helps improve productivity and efficiency, and work-from-home will now feel like heaven! Moreover, you can also adjust the seat height by turning the handle up or down· SOLID CONSTRUCTION, CERTIFIED COMFORT: 360-degree swivel, heavy-duty nylon base, and smooth-rolling casters for great stability and mobility. BIFMA certification, more reliable and sturdy, maximum capacity up to 275 lbs