The outer covering of fibrous material of a matured coconut,termed coconut husk, is the reject of coconut fruit. The fibers arenormally 50–350 mmlong and consist mainly of lignin, tannin, cellulose,pectin and other water soluble substances. However, due toits high lignin content, coir degradation takes place much moreslowly than in other natural fibers. So, the fiber is also very longlasting, with infield service life of 4–10 years. The water absorptionof that is about 130–180% and diameter is about 0.1–0.6 mm [42].