Ndesign named this special sofa SECRET as a result of their knowledge and experience with seating culture. Rather than waiting for user adapt to the design, it is aimed to adapt the product to the user’, with form and material choice .Secret sofa which aim to give maximum comfort to the space offers to the user as a cover of the function with simple form. The angular surfaces where the seating and back are in contact provide a natural resting position between the spine and legs. It can absorb the variability of dynamic movements during sitting between the upholstery and the frame.