Orlon, KNIT, WOOL, ANGORA, and CASHMERE are all fabrics commonly used to make sweaters. Orlon is a synthetic acrylic fiber that is lightweight and warm. KNIT is a type of fabric made by interlocking loops of yarn or thread. WOOL is a natural fiber made from the fleece of sheep or other animals. ANGORA is a type of WOOL made from the fur of the ANGORA rabbit. CASHMERE is a type of WOOL made from the undercoat of the Kashmir goat. All of these fabrics are soft, durable, and provide excellent insulation, making them ideal for sweaters.