***** Best Quality Guranteed. *****[Ergonomic and Adjustable Back] - The chair back is padded with high density PU sponge, being of high resilience, and based on the ergonomic theory. The chair can be adjusted to a lowered angled position for taking a quick nap. It can recline to a flat surface 90-degrees to 180-degrees and used as a bed. To adjust the back leaning angle, you need to press the latch on the outside of the seat and push the back forward or backward at the same time. *****[Rotatable Armrest and Adjustable Seat Height] - The seat becomes higher automatically by pressing the latch under the chair when there is nobody on the chair.
However, to make the chair seat lower you need to sit on it, turn the chair around and press the latch. The seat can be adjusted vertically between 16''-20''. Besides, you can press the latch on the side of the armrest and lift the armrest up or press it down with your hands to satisfy your need. *****[Flexible Casters and Firm Pneumatic