The variety of synthetic fibres used in manufacturing fibre grew steadily throughout the 20th century. Filters are typically made from cellulose acetate fibre. Carbon/carbon is a short name for carbon fibre reinforced carbon. It was made with aerospace grade carbon fibre composite. Construction is mainly of carbon fibre. Reduction in weight was achieved by employing carbon fibre panels. Alcantara and Weir leather upholstery along with carbon fibre trim are standard. Bodywork features extensive use of carbon fibre. The body is also accented with Steel Blue bare carbon fibre. It was converted to fibre optic light in 1992. Many species eat cellulose, having a specialised midgut that breaks down the fibre. It is finished in purple carbon fibre. Pancetta contains trace amounts of carbohydrates and no dietary fibre. It is marketed as a biodegradable, renewable synthetic fibre. Polymers are common matrices (especially used for fibre reinforced plastics).