Useful cork stopper to give a thousand uses to your jars and bottles.
Cork is the bark of cork oak (Quercus suber), a vegetal tissue that covers the trunk of the tree and grows, every year, a new periderm overlaping the oldest one. That makes cork a renewable and ecological product.
Cork has unique and unparalleled qualities that no human ingenuity has managed to imitate or improve: lightness, elasticity, high coefficient of friction, impermeability, or thermal insulation...
