The Oslo Series executive seating features the tension adjustable AdTech control system that keeps the users feet on the floor even when reclining. This allows the user to rock in a fluid, synchronized motion, providing the exact resistance for the backrest as well as the seat pan angle. The pivot point of the AdTech control is located behind the knees and the front edge does not raise the back of the users legs, allowing better circulation to the lower legs. The adjustable headrest allows the angle to be adjusted for optimum support in the head and shoulder areas. An adjustable lumbar support allows the user to set the precise height to support the lower back. The chair is standard with pneumatic seat height adjustment, high density molded foam, and a seat depth adjustment.