Cork 

Cork is an incredibly durable material. It is harvested from the evergreen Cork Oak tree. Stripping is carried out manually and the trees are never cut down. Nothing is wasted from the cork oak, all its components have a useful ecological or economic purpose. It’s waterproof, hypoallergenic, and soft to the touch, making it virtually perfect. At the end of 2011, the cork oak was unanimously established as Portugal’s National Tree. Around 23% of Portugal’s forest area is made up of cork oaks. Cork oaks forests are some of the most important ecosystems for animal preservation in the world