See also. 1  Conversion of units, for comparison with other units of length. 2  Cubic metre. 3  Metric prefix. 4  Mileage. 5  Odometer. 6  Orders of magnitude (length) 7  Square kilometre.
Wool is the fiber from the fleece of the sheep or lamb or hair of the Angora or Cashmere goat (and may include the so-called specialty fibers from the hair of the camel, alpaca, llama, and vicuna) which has never been reclaimed from any woven or felted wool product. Virgin wool and new wool are also used to refer to such never used wool.
Wool is one of the oldest and most universal fibers and has been used for garments and household linens since the earliest civilizations. Wool textiles have been documented as far back as 3000 B.C. The sheared fleece of sheep, wool is warm, naturally insulating, water-repellent, and extremely durable.