After size, fibre length is the most important property of fibre. Fibre length is critical in the processing of fibres and yarns and the translation of fibres strength to yarn strength. In general, a longer fibre length preferred. Textile fibre is either staple or filament length. Staple fibres range from 2 to 46 cm; filament fibres are of infinite length. All-natural fibres except silk are of staple length. Silk and manufactured fibres may be staple or filament fibres extending from the external size and shape of large articles to dimensions of crystal lattices.