Royaloak Zana Office chair has a headrest that is height adjustable and can be tilt to the desired angle. It has a firm foam cushion upholstered with nylon knitted fabric, which makes long hours at your desk comfortable. The flexible high-grade nylon mesh back is designed for air-circulation and support when you lean back the adjustable Lumbar support the lower lumbar area, it has depth tuning adjustment. It has a chrome base, Adjust the height using the gas lift to find that comfortable position and the nylon casters make it easy to move around your space. adjustable armrest to rest your arms . this chair comes with single lever to adjust height and lock the back rest.