The height of the chair can be easily adjusted from 16.1 inches to 19.3 inches, suitable for different heights.Can rotate 360 degrees, five durable casters, strong support, smooth movement.The thickness of the cushion is about 4.3 inches, and the interior is filled with high-density soft sponge which effectively relieve your body,ensuring you don't get tired after sitting for a long time.Semi-wrapped backrest, high-density sponge filling, ergonomic design, slightly inner arc curve better fit your body.