3D model of MUUTO FIBER ARMCHAIR SWIVEL BASE W. RETURN | DESIGNER: ISKOS BERLIN | The Fiber Armchair brings a new perspective to the iconic shell chair through its innovative composite of plastic and wood fibers. The wood fibers blend into the surface for a matte finish and add a soft, inviting touch. The Fiber Armchair is designed with friendly, embracing curves that provide extensive comfort to its user while taking up little space in the room.