Duc original a design from 1976, based on the combination of advanced materials and structural technology. Respecting the innovative and refined nature of the original design, Cassina innovates this sofa, both in terms of comfort and size, while maintaining its characteristic panel structure through a zipper that runs along the sides for its entire height. This sofa is a design by Mario Bellini. The fabric is whole, however due to sunlight there is discoloration as shown in the photos. This beautiful 3 seater sofa is otherwise in good condition.Discoloration from sunlight and use. Top of back, seat and arm.