STRUCTURE: metal. STRUCTURE UPHOLSTERY: structure and back in expanded polyurethane of varied densities (HR30-28 + NF21-20), covered with synthetic lining 380gr. Seat in expanded polyurethane of varied densities (HR36-36 + limpha 40M + SOFF35s), covered with synthetic lining 380gr. SPRINGING: elastic belts. ARM: cold-expanded polyurethane. Attention: available only in leather. SEAT HEIGHT: 40 cm ARM HEIGHT: 56 cm (fix); 50/55 cm (with arm in leather 6109760 + 6109761). FEET: metal, finishes: titanium or black nickel or varnished micaceous brown or oxy grey, h.12,5 cm.