The latest model developed by Diwar is the Kos chair, which is notable for the equilibrium reached between aesthetic and functional needs. The sinuous lines of the back are highlighted by the support structure in polypropylene, which together with the mesh give the chair a lightness but also stability at the same time. Added comfort is given by an adjustable lumbar support. The top quality synchron mechanism is made of steel and aluminium and can be blocked in five positions. On request there is a seat slide option. Armrests are either fixed or height adjustable.