KOMFOTT Ergonomic Office Chair with Adjustable Lumbar Support, Armrests and Headrest

【Reclining Backrest & Adjustable Seat Height】: The backrest of the ergonomic office chair can be locked at 3 different angles (90°, 105°, 135°), which is perfect for working, studying and napping. You can also adjust the rocking tightness of backrest by rotating the tension knob. Additionally, the seat height can be adjusted in the range of 16''-20'' to fulfill your diversified needs. 【Rotatable Headrest & Adjustable Armrest】: Our office chair features 40° rotatable headrest to provide steady support for your head in a relaxed position. And the up/down armrests relax your arms and shoulder while working, thus bringing additional enjoyment and satisfaction to your office life. 【Ergonomic Design for All Day Comfort】: Curved backrest with up/down lumbar support mitigates fatigue on the back and waist. By rotating the round button on the back, the protruding low waist structure can be moved forward or backward for increased comfort. Also, the waterfall padded cushion avoids leg pa