Seat back: wood or plastic alternative, modeling or smooth alternative, multilayer board or steel inside alternative. Sponge with the polyurethane case-hardened. Cushion: wood or plastic alternative, modeling or smooth alternative, multilayer board or steel inside alternative. Sponge with the polyurethane case-hardened. Seat leg: A-level steel plates. Two legs or single alternative Arm-rest: Solide wood Tablet/Book nest/ Cup stand : Alternative Fabric: Alternative Color: Alternative