Internal structure:Fir wood multi-ply .Cushions padding:Sitting and back cushion :Superficial padding with natural , sterilized goose feathers. Center withexpanded polyurethane.Back structure and arms :Expanded polyurethane with different density.Upholstery:High quality leathers or fabrics available in different categories.Upon request the piping can be made in different colors of leathers or fabrics.External structure , base and legs:Solid American walnut base and legs . This item can be customized upon request.