<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 High Stool:</strong>&nbsp; tall task chair in accordance with DIN 68877. Five-star base in polyamide (basic dark) or polished die-cast aluminium with reverse-brake castors. Adjustable seat height. Fitted with height-adjustable polyamide foot ring with anti-skid finish. Adjustment ring for foot ring height is always in the colour soft green.</li></ul>