Linea Idaho Sofa Range. The Idaho sofa is a contemporary sofa with a classic shape and straight cushions upholstered in old saddle nut leather with a comfortable and stylish accent chair option. Please note that the leather is a natural material; a soft and luxurious fabric that may change with age and display unique characteristics. Genuine leather reflects the life of the animal; details including wrinkles and variations in grain and colour make the product special and should not be seen as flaws. We believe that this adds to the look and style of the piece.