Premium Ergonomic Design: This ergonomic office chair features an 'S-Shaped' design with 7 support points (head, neck, shoulders, back, waist, hips, and hands) for optimal sitting posture and improved comfort, helping to reduce back pain and boost work efficiency. Adjustable Comfort: The chair offers adjustable features such as a 2.4" height-adjustable and 50° upwards rotating headrest, 2" height-adjustable and 1.2" depth-adjustable lumbar support, 360° swivel, 4" seat height adjustment, 90°-125° tilt/rocking function with tilt lock, and flip-up armrests, ensuring a customized fit for various sitting positions and body types. Superior Cushioning: With a 4" extra-thick padded cushion made of high-quality supportive sponge and pocket springs, the chair provides ultimate comfort akin to a sofa, allowing you to work for extended periods without discomfort. The large 21.2" W x 20.5" D seat cushion accommodates different sitting positions. Dur