<ul><li><strong>Seat and back shell:</strong>&nbsp; one-piece seat and back shell made of polypropylene and encased in polyurethane foam, covered with SingleKnit fabric.</li><li><strong>Pivot Stool:</strong>&nbsp; work chair in accordance with DIN 68877. Without foot ring in normal swivel chair height. Adjustable seat height. Five-star base in polyamide (basic dark) or polished die-cast aluminium, with double castors (Ø 60 mm) or glides.</li></ul>