A generic name for manufactured fibres in which the fibre-forming substance is any long-chain synthetic polymer composed of at least 80% by weight of vinylidene chloride units. Saran fibres have good chemical resistance to acids and alkalis and do not lose their strength in sunlight. They are resistant to water and insects. In addition, saran fabrics do not tend to retain dirt and are easy to clean. Saran fabrics are heavy. They have been used for home furnishings, automobile upholstery, belts, sports bags and shoes.