Help promote strength and flexibility in your back while you work with the Serta Claremont Back in Motion Executive Office Chair. This ergonomic office chair helps users become more productive and efficient by maximizing lower back support and comfort while seated. Its unique Back in Motion Active Seat Technology swivels the lumbar forward, providing the same effects as a pelvic tilt exercise by promoting spinal movement and flexibility in your core. Push-button adjustable armrests and pneumatic height adjustment allow the leather office chair to be quickly and easily customized to find the right fit for you. The multilayered cushions are soft yet supportive, so you'll feel refreshed even after a long day. Features: Back in Motion Technology pivots the lower back forward to flex pelvis and keep your back in a positive neutral position Thick, ergo layered body pillows, cushioned headrest and padded arms are comfortable and supportive Ergonomic height and seat adjustment makes it easy to lock in the most comfortable positions Adjustable padded armrests offer multiple height positions Pneumatic lift with adjustable tension and lock out feature ensures correct foot positioning Heavy-duty 60 mm casters offers smooth mobility Some assembly required