Enjoy a cool and comfortable sitting experience with this ergonomic office chair. It features a high mesh back that supports your whole upper body, a large cushioned seat that reduces fatigue, and a breathable mesh fabric that prevents overheating. You can customize this chair to suit your needs, with an adjustable headrest, retractable armrests, and a movable lumbar pillow. You can also tilt the backrest up to 110° and rock back and forth with the control knob under the seat. The seat height can be easily changed from 47.5cm to 56.5cm with the adjustment lever. The chair has durable nylon swivel casters that allow you to move around smoothly and freely with a 360 degrees rotation. This office chair is the perfect choice for anyone who spends a lot of time at their desk.