Cork is the outer bark of the cork oak tree, which grows mainly In the Mediterranean region of the world. This tree has a life span of about 200 year. Each cork must be 20 to 25 year old before it can provide its first harvest of cork .After extracting the cork a new layer starts generating and nine years have to pass until a new harvest can take place . The cork harvesting is made in a sustainable manner and does not harm the tree which is never cut down or removed.
There are different sizes available of 3mm, 25mm and 50mm.