Wool is the fiber from the fleece of sheep. Wool is a completely renewable fiber resource. Every year, after shearing, sheep produce a new fleece, which can be shorn off again the following year. It is a natural, protein, multicellular, staple fiber. Early wool was a very coarse fiber. Its development into the soft, fleecy coat so familiar today is the result of long and continued selective breeding. The breeding of animals and the production of the wool fiber into the fabric are more costly processes than the cultivation of plant fiber (e.g. cotton, linen) and their manufacture. The