Seat and backrest: polyurethane filling; cover in fabric or leather.
Armrests: solid wood with oiled finish; natural oak, dark oak or American walnut.
Base: bent sheet steel and tubular steel, powder-coated (smooth).
Glides: hard glides for carpet or felt glides for hard floors.
Origin of wood: oak (Quercus robur) from Western Europe and/or Poland; American walnut (Juglans nigra) from the USA.