Linea Matera Black Sofa Range. The Matera range is a modern yet comfortable range. The seats are filled with foam and boast a zig zag spring suspension ensuring a comfortable, durable seat. The matera is upholstered in full grain hide leather, selected as the highest quality from US farmed cattle so there are fewer imperfections. Please note, however, that 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.