Cover:100% polyesterBack/ Seat:Layer-glued wood veneerLining:100% polypropyleneBack foam:Polyurethane foam 25 kg/cu.m.Back frame:Steel, Epoxy/polyester powder coatingSeat foam:Polyurethane foam 35 kg/cu.m.Gas cylinder:Steel, Acetal plastic, Epoxy/polyester powder coatingFoot rest:Steel, Polypropylene plastic, Epoxy/polyester powder coatingStar base:Polypropylene plastic, Steel, Epoxy/polyester powder coatingCastors:Polypropylene plastic