Cork is an eminently renewable resource harvested from the living bark of the Cork Oak. The properties of cork are derived naturally from the structure and chemical composition of the inner cells. Each cubic centimeter of cork’s honeycomb structure contains between 30 and 40 million polyhedral (14 sided) cells (over 100 million cells per cubic inch). Cork is harvested in a steady cycle that promotes healthy growth to the tree over its expected lifespan of over 200 years. Though the Cork Oak "Quercus suber" can flourish in many climates, the conditions that favor commercial use lie in a fairly narrow swath that cuts through Western Europe and Northern Africa along the Mediterranean coast.