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Cotton fiber comes from the boll of the cotton plant. Cotton yarn is less elastic than yarn from animal fibers, e.g. wool. Cotton thread is also used for lace knitting.
Mohair fiber comes from the angora goat. Mohair yarn has a thin core surrounded by long, fuzzy fibers. It is a popular choice for lace knitting. It may also be blended with sheep's wool for sweaters.
Sport yarn is heavier than fingering and lighter than worsted. It is generally knit at about 6 stitches per inch.
Angora fibers come from the angora rabbit, a long-haired breed of rabbit. The fibers are short and produce a fuzzy "halo" when knit.
Boucle yarn has both thick and thin areas. When knit, it creates a textured fabric with a rough surface.
Fingering yarn is lightweight yarn also called sock yarn. These yarns are typically knit at a gauge of 7 to 9 stitches per inch.
Sasha Kagan is a designer best known for her knitted sweaters. Most designs feature many colors in geometric patterns or pictures of flora and fauna.
Mady Gerrard is an award-winning fashion designer. She has published knitting and crochet patterns as well as her memoir, "Full Circle", in which she recounts her life as a successful designer and a Holocaust survivor.