Office stool wonderful! I was looking for something that under my computer desk (h 100cm) with built-in drawer fits. Accordingly, the amount should not be so high. Therefore, I have decided on this stool. through the tire below the base plate (with a commercial auto-valve) can be of great regulate seating comfort. more or less air pressure affects seating position (stability of the spine). so that it can be very good work on the computer. fatigue occur with me only on for about 3-4 hours.