Koehl Timeline 2015 Launch of the new ANTEO® ALU range The new ANTEO® ALU chair design with ergonomic comfort is supremely stylish. Designed to be an executive version of the best-selling Anteo task chair. The high backrest and the elegant aluminium profile is distinctive. It has many backrest design options such as leather, Tube, Network or SlimLine. In addition, the KÖHL® Air-Seat is available.