Bonnie 2 Seater Sofa Poltrona Frau: Seasoned beechwood. Seat suspension with hand tied steel-springs connected to jute belts. Horsehair padding. Backrest suspension with greek springs. Elastic belt armrest suspension with wool padding. Down filled cushions. Polyurethane foam backrest cushion. The diamond shape design of the backrest is obtained by handcrafted tufting and leather covered buttons. Leather piping runs along the seams. The external back part of the chair is finished with a row of leather covered tacks.