The Kol chair, designed by Ibon Arrizabalaga, comes with either wooden or metal legs.‎ Each version bestows its own personality on the chair.‎ The version including wooden legs is always made from oak, with a range of different finishes, including black-tinted oak.‎ Kol with metal legs, on the other hand, comes in walnut also.‎ Upholstered seat and backrest pads are available in both versions.‎