Zonal was crafted for the human form. Studying body movement, designer Justus Kolberg, developed Tuun Technology where independent linear supports in the back frame move in tandem with the user as they change postures throughout the day. To further fine tune the sit, Zonal features a body balance mechanism, adjustable lumbar support, seat depth movement, and 4D pivoting arms. Zonal empathizes with user needs with a simple, highly functional seating interface.