This chair has active sway sitting, adjustable width and height, and has premium vinyl ultraleather.
When we were assembling it we found a defect in the upholstery under the seat. It can't be seen when the chair is upright, and does not effect performance in any way. Other than that, it is new. See photos.
We have teamed this up with a slightly used gas spring and base which should suit users between 170-185cm tall.