Sinus is a hit series of dining chairs produced by the German design brand KFF. Immediately after the first Sinus chair was produced, it became one of the more popular designs in the KFF collection. This special appearance is distinguished by its dynamically curved steel frame, in combination with the minimalist upholstered surfaces for the seat and the backrest.And also available in combination with the minimalist wooden surfaces for the seat and the backrest. The special thing is that Sinus, despite these minimalistic surfaces, is incredibly comfortable. The square tubular steel frame is available in various designs, including a finish with a 'Moodred' color, but also a matte black finish. The seat and back can be ordered in various types of fabric or leather, divided into price groups, with many possibilities in every price group. Sinus is standard equipped with plastic gliders to protect both the floor and the chair, but it is also possible to obtain gliders of felt instead.