The load-bearing frame is constructed of poplar heartwood with parts in plywood, curved poplar plywood, and particleboard. The heartwood is naturally seasoned for at least three years in stacks on the company’s premises. Dap joints unite the various parts of the frame with securing cylindrical dowels. Plywood elements, all covered in leather, are also fixed to the frame. The seat webbing consists of elastic polypropylene and natural latex belts in two sizes and with different elasticity. Belts 9 cm wide with 20% elasticity are fixed parallel to each other and perpendicularly to the length of Limousine; these are interlaced by 5 cm wide belts with 80% elasticity. The frame and the fixed seat cushion are padded with sheets of resilient CFC-free polyurethane foam with differing density (between 35 and 40 kg/m³) and covered with bondedplush and polyester wadding. The movable smooth and quilted back cushions are filled with “Tecnolat,” a mixture of 100% silicon-coated hollow staple polyester and natural latex foam cut into small lozenge-shaped pieces. This new material gives the same softness as feathers while having a “memory” effect—after pressure has been exerted on the cushion it automatically returns to its initial condition without having to plump it up manually. The cushion with headrest has a painted tubular steel core covered with CFC-free, resilient polyurethane foam with a density of 25 kg/m³, covered in turn with bonded plush and polyester wadding.