Yarns used for the creation of fabric can be classified by the amount of twist in each yarn, from very low twist (3-5 turns per inch) to crepe twist (40-75 per inch). The texture of crepe yarns, when they go through a wet-finishing process, becomes uneven, and the fabrics made from these crepe fibers have a pebbled texture, good drapability, and a matte appearance.
Note that the crepe textures of fabrics are also achieved in other ways. See Crepe.
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